a-a a-z aaa aae aam aap aaz aea aee aem aep aez ama ame amm amp amz ap- apa ape apm app az- aza aze azm azp azz eaa eae eam eap eaz eea eee eem eep em- ema eme emm emp ep- epa epe epm epp epz eze ezz maa mae mam map maz mea mee mem mep mez mma mme mmm mmp mmz mpa mpe mpm mpp mza mzm mzp p-p paa pae pam pap paz pea pee pem pep pez pma pme pmm pmp pmz ppa ppe ppm ppp ppz pzm pzp zaa zam zap zaz zea zee zem zep zez zma zmm zmp zpe zpm zpp zzz