a-a a-b a-t aaa aab aak aam aan aas aat ab- aba abb abk abm abn abs abt aka akb akk akm akn aks ama amb amk amm amn ams amt an- ana anb ank anm ann ans ant as- asa asb ask asm asn ass ast at- ata atb atm atn ats att baa bab bak bam ban bas bat bba bbb bbk bbm bbn bbs bbt bka bkb bkk bkm bkn bks bkt bma bmb bmk bmm bmn bms bmt bna bnb bnk bnn bns bnt bsa bsb bsk bsm bsn bss bst bta btb btk btm btn bts btt k-t ka- kaa kab kak kam kan kas kat kba kbb kbk kbm kbn kbs kkb kkk kkm kkn kks kkt kma kmb kmk kmm kms kmt kn- kna knk knm knn knt ksa ksb ksk ksm ksn kss kst kta ktb ktk ktm ktn kts ktt maa mab mak mam man mas mat mba mbb mbk mbm mbs mbt mka mkb mkk mkm mkn mks mkt mma mmb mmk mmm mmn mms mmt mna mnb mnk mnm mnn mns mnt msa msb msk msm msn mss mst mta mtb mtk mtm mtn mts mtt naa nab nak nam nan nas nat nba nbb nbk nbm nbn nbs nbt nka nkk nkm nkn nks nkt nma nmb nmk nmm nmn nms nmt nna nnb nnk nnm nnn nns nnt nsa nsb nsk nsm nsn nss nst nta ntb ntk ntm ntn nts ntt saa sab sak sam san sas sat sba sbb sbk sbm sbn sbs sbt sk- ska skb skk skm sks skt sma smb smk smm smn sms smt sna snb snk snm snn sns snt ss- ssa ssb ssk ssm ssn sss sst sta stb stk stm stn sts stt taa tab tak tam tan tas tat tba tbb tbk tbm tbn tbs tbt tka tkb tkk tkm tks tkt tma tmb tmk tmm tmn tms tmt tna tnb tnk tnm tnn tns tnt tsa tsb tsk tsm tsn tss tst tta ttb ttk ttm ttn tts ttt