a-a a-t a-z aaa aan aao aap aas aat aaz an- ana ann ano anp ans ant anz aoa aon aoo aop aos aot ap- apa apn apo app aps apt as- asa asn aso asp ass ast asz at- ata atn ato atp ats att atz az- aza azn azo azp azs azt azz naa nan nao nap nas nat naz nna nnn nno nnp nns nnt nnz no- noa non noo nop nos not noz npa npn npo npp nps npt npz nsa nsn nso nsp nss nst nsz nta ntn nto ntp nts ntt ntz nzo nzp nzs nzz oaa oan oao oap oas oat on- ona onn ono onp ons ont oo- ooa oon ooo oop oos oot op- opa opn opo opp ops opt os- osa osn oso osp oss ost ot- ota otn oto otp ots ott otz oza ozo ozs ozt ozz p-p paa pan pao pap pas pat paz pn- pna pnn pno pnp pns pnt poa pon poo pop pos pot poz ppa ppn ppo ppp pps ppt ppz ps- psa psn pso psp pss pst pt- pta ptn pto ptp pts ptt ptz pzp pzt saa san sao sap sas sat saz sna snn sno snp sns snt soa son soo sop sos sot soz spa spn spo spp sps spt spz ss- ssa ssn sso ssp sss sst ssz sta stn sto stp sts stt stz sza szp taa tan tao tap tas tat taz tna tnn tno tnp tns tnt tnz to- toa ton too top tos tot toz tpa tpn tpo tpp tps tpt tpz tsa tsn tso tsp tss tst tta ttn tto ttp tts ttt tza tzs zaa zan zao zap zas zat zaz znn zno znp zns zo- zoa zon zoo zos zot zpo zpp zpt zsa zst zsz zta zzs zzt zzz