The BASSA Home Page shows the beautiful phonemic Bassa script of the Bassa on the central coast of Liberia :

Figure 4: Table of Bassa Script

Table of Bassa Script

   Note that this contains symbols for vowels, consonants, and tones!

   Here is a sample of the Bassa script  :

Figure 5: Sample of the Bassa Script

Sample of Bassa Script of Liberia

    The Liberian Post, Page 8   also says, "By dreams, indigenous systems of writing were invented. Dwaki Bukele (Vai tribe) invented such a system. Other scripts are Bassa Vah (invented by Di Widah).... "  So the Bassa script also had a named inventor, Di Widah.