a-a a-c a-t aaa aac aak aam aan aao aas aat ac- aca acc ack acm acn aco acs act aka akc akk akm akn ako aks ama amc amk amm amn amo ams amt an- ana anc ank anm ann ano ans ant aoa aoc aok aom aon aoo aos aot as- asa asc ask asm asn aso ass ast at- ata atc atm atn ato ats att c-- caa cac cak cam can cao cas cat cca ccc cck ccm ccn cco ccs cct cka ckc ckm cko cks ckt cma cmc cmk cmm cmn cmo cms cmt cn- cna cnc cnm cnn cno cns cnt co- coa coc cok com con coo cos cot csa csc csk csm csn cso css cst cta ctc ctk ctm ctn cto cts ctt k-t ka- kaa kac kak kam kan kao kas kat kca kcc kck kcm kcn kcs kct kkc kkk kkm kkn kks kkt kma kmc kmk kmm kmo kms kmt kn- kna knc knk knm knn kno knt koa koc kok kom kon koo kos kot ksa ksc ksk ksm ksn kso kss kst kta ktc ktk ktm ktn kto kts ktt m-o maa mac mak mam man mao mas mat mc- mca mcc mck mcm mcn mco mcs mct mka mkc mkk mkm mkn mko mks mkt mma mmc mmk mmm mmn mmo mms mmt mna mnc mnk mnm mnn mno mns mnt moa moc mok mom mon moo mos mot msa msc msk msm msn mso mss mst mta mtc mtk mtm mtn mto mts mtt naa nac nak nam nan nao nas nat nca ncc nck ncm ncn nco ncs nct nka nkc nkk nkm nkn nko nks nkt nma nmc nmk nmm nmn nmo nms nmt nna nnc nnk nnm nnn nno nns nnt no- noa noc nok nom non noo nos not nsa nsc nsk nsm nsn nso nss nst nta ntc ntk ntm ntn nto nts ntt oaa oac oak oam oan oao oas oat oc- oca occ ock ocm ocn oco ocs oct oka okc okk oko oks om- oma omc omm omn omo oms omt on- ona onc onk onn ono ons ont oo- ooa ooc ook oom oon ooo oos oot os- osa osc osk osm osn oso oss ost ot- ota otc otk otm otn oto ots ott saa sac sak sam san sao sas sat sca scc sck scm scn sco scs sct sk- ska skc skk skm sko sks skt sma smc smk smm smn smo sms smt sna snc snk snm snn sno sns snt soa soc sok som son soo sos sot ss- ssa ssc ssk ssm ssn sso sss sst sta stc stk stm stn sto sts stt taa tac tak tam tan tao tas tat tca tcc tck tcm tcn tco tcs tct tka tkc tkk tkm tko tks tkt tma tmc tmk tmm tmn tmo tms tmt tna tnc tnk tnm tnn tno tns tnt to- toa toc tok tom ton too tos tot tsa tsc tsk tsm tsn tso tss tst tta ttc ttk ttm ttn tto tts ttt