a-a a-c a-t a-z aaa aac aak aan aas aat aaz ac- aca acc ack acn acs act acz aka akc akk akn aks an- ana anc ank ann ans ant anz as- asa asc ask asn ass ast asz at- ata atc atn ats att atz az- aza azn azs azt azz c-- caa cac cak can cas cat caz cca ccc cck ccn ccs cct ccz cka ckc cks ckt cn- cna cnc cnn cns cnt csa csc csk csn css cst csz cta ctc ctk ctn cts ctt ctz cz- czc czk czt k-t k-z ka- kaa kac kak kan kas kat kaz kca kcc kck kcn kcs kct kkc kkk kkn kks kkt kn- kna knc knk knn knt ksa ksc ksk ksn kss kst kta ktc ktk ktn kts ktt naa nac nak nan nas nat naz nca ncc nck ncn ncs nct nka nkc nkk nkn nks nkt nna nnc nnk nnn nns nnt nnz nsa nsc nsk nsn nss nst nsz nta ntc ntk ntn nts ntt ntz nzs nzz saa sac sak san sas sat saz sca scc sck scn scs sct sk- ska skc skk sks skt sna snc snk snn sns snt ss- ssa ssc ssk ssn sss sst ssz sta stc stk stn sts stt stz sza taa tac tak tan tas tat taz tca tcc tck tcn tcs tct tka tkc tkk tks tkt tkz tna tnc tnk tnn tns tnt tnz tsa tsc tsk tsn tss tst tta ttc ttk ttn tts ttt tza tzs zaa zac zak zan zas zat zaz zcs zka zks znc znn zns zsa zst zsz zta zzs zzt zzz