a-a a-t a-z aaa aak aan aao aas aat aaz aka akk akn ako aks an- ana ank ann ano ans ant anz aoa aok aon aoo aos aot as- asa ask asn aso ass ast asz at- ata atn ato ats att atz az- aza azn azo azs azt azz k-t k-z ka- kaa kak kan kao kas kat kaz kkk kkn kks kkt kn- kna knk knn kno knt koa kok kon koo kos kot koz ksa ksk ksn kso kss kst kta ktk ktn kto kts ktt kzo naa nak nan nao nas nat naz nka nkk nkn nko nks nkt nna nnk nnn nno nns nnt nnz no- noa nok non noo nos not noz nsa nsk nsn nso nss nst nsz nta ntk ntn nto nts ntt ntz nzo nzs nzz oaa oak oan oao oas oat oka okk oko oks on- ona onk onn ono ons ont oo- ooa ook oon ooo oos oot os- osa osk osn oso oss ost ot- ota otk otn oto ots ott otz oza ozo ozs ozt ozz saa sak san sao sas sat saz sk- ska skk sko sks skt sna snk snn sno sns snt soa sok son soo sos sot soz ss- ssa ssk ssn sso sss sst ssz sta stk stn sto sts stt stz sza taa tak tan tao tas tat taz tka tkk tko tks tkt tkz tna tnk tnn tno tns tnt tnz to- toa tok ton too tos tot toz tsa tsk tsn tso tss tst tta ttk ttn tto tts ttt tza tzs zaa zak zan zao zas zat zaz zka zks znn zno zns zo- zoa zok zon zoo zos zot zsa zst zsz zta zzs zzt zzz