a-a a-z aaa aam aan aao aap aaz ama amm amn amo amp amz an- ana anm ann ano anp anz aoa aom aon aoo aop ap- apa apm apn apo app az- aza azm azn azo azp azz m-o maa mam man mao map maz mma mmm mmn mmo mmp mmz mna mnm mnn mno mnp mnz moa mom mon moo mop moz mpa mpm mpn mpo mpp mza mzm mzn mzp naa nam nan nao nap naz nma nmm nmn nmo nmp nmz nna nnm nnn nno nnp nnz no- noa nom non noo nop noz npa npm npn npo npp npz nzo nzp nzz oaa oam oan oao oap om- oma omm omn omo omp omz on- ona onn ono onp oo- ooa oom oon ooo oop op- opa opm opn opo opp oza ozm ozo ozz p-p paa pam pan pao pap paz pma pmm pmn pmo pmp pmz pn- pna pnm pnn pno pnp poa pom pon poo pop poz ppa ppm ppn ppo ppp ppz pzm pzp zaa zam zan zao zap zaz zma zmm zmp znn zno znp zo- zoa zom zon zoo zpm zpo zpp zzz