2427959-A cites 2 patents.

The Acoli language has 4 types of tones called voices and 3 combinations of tones. These voices and combinations fall under two categories, group A and group B. With group A the vowels are pronounced from the throat. With group B the vowels are pronounced from the chest and they are louder than group A vowels. An orthography is defined combining vowels of the Latin alphabet with diacritical marks to indicate the appropriate pronunciation.

Title
Acoli accented orthography with diacritical marks.
Application Number
GB20050003702 20050223
Publication Number
2427959A
Application Date
February 23, 2005
Publication Date
January 10, 2007
Inventor
Lakareber Janet
GB
Assignee
Lakareber Janet
GB
IPC
G09B 19/06
G09B 19/04
G09B 11/00
G09B 17/00
G09B 19/08
G09B 19/04
G09B 11/00
G09B 17/00
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