Following independence, the government of Guinea

Guinea

Guinea , officially the Republic of Guinea , is a country in West Africa. Formerly known as French Guinea , it is today sometimes called Guinea-Conakry to distinguish it from its neighbour Guinea-Bissau. Guinea is divided into eight administrative regions and subdivided into thirty-three prefectures...

 adopted rules of transcription for the languages of Guinea

Languages of Guinea

The Republic of Guinea is a multilingual country, with over 40 languages spoken. The official language is French, which was inherited from colonial rule...

 based on the 26-letter basic Latin alphabet. This included use of various digraphs for sounds not represented in European languages.

Guinea language orthography

This system was widely used within the country but differed from the orthographies of neighboring countries of West Africa

West Africa

West Africa or Western Africa is the westernmost region of the African continent. Geopolitically, the UN definition of Western Africa includes the following 16 countries and an area of approximately 5 million square km:-Flags of West Africa:...

, as developed in the wake of the 1966 Bamako conference on harmonizing orthographies of the languages of the region. Following the change of government in 1984, it was decided to adopt an orthography similar to the African reference alphabet

African reference alphabet

An African reference alphabet was first proposed in 1978 by a UNESCO-organized conference held in Niamey, Niger, and the proposed alphabet was revised in 1982...

 used elsewhere in the region.

A tentative and incomplete table follows:

Pre-1985	Post-1985	Language(s)	IPA value
bh	ɓ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes...	ɓ
dh	ɗ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes...	ɗ
gh Gh (digraph) Gh is a digraph found in many languages.-English:In English, ⟨gh⟩ historically represented . In modern English, ⟨gh⟩ is almost always either silent or pronounced...	ɠ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes...	ɠ
kh	x X X is the twenty-fourth letter in the basic modern Latin alphabet.-Uses:In mathematics, x is commonly used as the name for an independent variable or unknown value. The usage of x to represent an independent or unknown variable can be traced back to the Arabic word šay شيء = “thing,” used in Arabic...	Susu Susu language Sosoxui is the language of the Soso people of Guinea, West Africa. It is in the Mande language family.It is one of the national languages of Guinea and spoken mainly in the coastal region of the country. The language was also used by people in present-day Guinea as a trade language.e.g...	ɣ
nh Nh (digraph) Nh is a digraph of the Latin alphabet, a combination of N and H. Together with lh and the interpunct, it was a typical feature of Old Occitan, the language used by medieval troubadours.-African languages:...	ŋ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes... , Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages...	ŋ
ny	ɲ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes... , Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages... , Susu Susu language Sosoxui is the language of the Soso people of Guinea, West Africa. It is in the Mande language family.It is one of the national languages of Guinea and spoken mainly in the coastal region of the country. The language was also used by people in present-day Guinea as a trade language.e.g...	ɲ
yh	ƴ	Pular Pular language Pular is a Fula language spoken primarily by Fula people in the Fouta Jalon area in Guinea. It is also spoken in parts of Guinea Bissau, Sierra Leone, and Senegal. There are a small number of speakers in Mali. Pular is spoken by 2.5 million Guineans, about 28% of the national population. This makes...	/ʔʲ/
è È or can be*The letter E with a Grave accent.*In Shakespeare's works, è would be used in the -ed suffix to indicate alternate pronunciation, for example with winged/wingèd, the è would be added to produce a pronunciation of instead of ....	ɛ	Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages... , Susu Susu language Sosoxui is the language of the Soso people of Guinea, West Africa. It is in the Mande language family.It is one of the national languages of Guinea and spoken mainly in the coastal region of the country. The language was also used by people in present-day Guinea as a trade language.e.g...	ɛ
ö Ö "Ö", or "ö", is a character used in several extended Latin alphabets, or the letter O with umlaut to denote the front vowels or . In languages without umlaut, the character is also used as a "O with diaeresis" to denote a syllable break, wherein its pronunciation remains an unmodified .- O-Umlaut...	ɔ	Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages... , Susu Susu language Sosoxui is the language of the Soso people of Guinea, West Africa. It is in the Mande language family.It is one of the national languages of Guinea and spoken mainly in the coastal region of the country. The language was also used by people in present-day Guinea as a trade language.e.g...	ɔ
dy	j J Ĵ or ĵ is a letter in Esperanto orthography representing the sound .While Esperanto orthography uses a diacritic for its four postalveolar consonants, as do the Latin-based Slavic alphabets, the base letters are Romano-Germanic...	Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages...	ʒ
ty	c C Ĉ or ĉ is a consonant in Esperanto orthography, representing the sound .Esperanto orthography uses a diacritic for all four of its postalveolar consonants, as do the Latin-based Slavic alphabets...	Maninka Maninka language Maninka, or more precisely Eastern Maninka, is the name of several closely related languages and dialects of the southeastern Manding subgroup of the Mande branch of the Niger–Congo languages...	ʃ