21.
1)alphabet(inyuguti)
Abcd
Efgh
Ijklmn
Oprst
Ovwyz
2) vowels (inyajwi)
a(ah) e (eh), i(ee) ,o(oh) ,u(oo)
3) consonants (ingombajwi)
Simple: D,f,g,h,k,m,n,h,s,t,v,w,z
Special:
B
C
G (ga,go,gu are simple) but
Gi (gji) , Ge(gje)
K(ka,ko,ku are simple) but
Ki(kji) , me(kje)
J
L and r not so different
Q and X don't exist
Y is a consonants
4 consonants combination (ibihekane)
2-letters
Ts, nz, rw, by, my,mw,tw,bw,,cy,ry,my,nk,nj,mv,mp ,by ,pf ,zw, nw ,gw , ns, mf, sw ,hw, ty ,by ,rw, sy, fw, cw
3-letters
Shy,mby,nny ,nyw,njy, ngw,shw, mbw, ndw,nzw, nsw, tsw , ntw nkw njw ndy nty mvw
4-letters
Nshy , njyw, nshw
**The most special yet common sounds among all as they don't sound the way they are spelled:
Rw
Bg
Jy
Mw
Mp
Nk
Nt
Ry
By
Cy
Tw