a-a a-z aaa aae aak aap aaz aea aee aek aep aez aka ake akk akp ap- apa ape apk app az- aza aze azp azz eaa eae eak eap eaz eea eee eek eep eka eke ekp ep- epa epe epp epz eze ezz k-z ka- kaa kae kak kap kaz ke- kea kee kek kep kez kke kkk kkp kpa kpe kpk kpp p-p paa pae pak pap paz pea pee pek pep pez pka pke pkp ppa ppe ppk ppp ppz pzk pzp zaa zak zap zaz zea zee zek zep zez zka zpe zpp zzz