Ngwii language

Ngwii or Ngul is a Bantu language spoken in the Kwilu province of the Democratic Republic of the Congo.

Despite having a relatively small speech community, use of the language is prevalent.

Phonology
Ngwii has 37 consonants and 7 vowels:

Numerals
Like other Niger-Congo languages, Ngwii has a base ten counting system where numbers after ten use the conjunction "ni" to add another number to reach higher values.

The first 20 numerals in Ngwii are
 * 1) mo
 * 2) ipe
 * 3) isar
 * 4) ini
 * 5) itɛan
 * 6) isom
 * 7) sjambja
 * 8) ɲani
 * 9) ɲa
 * 10) dzum
 * 11) dzum ni mo
 * 12) dzum ni pe
 * 13) dzum ni sar
 * 14) dzum ni ni
 * 15) dzum ni tjan
 * 16) dzum ni som
 * 17) dzum ni sjambja
 * 18) dzum ni ɲani
 * 19) dzum ni iwaj
 * 20) dzum na dzum