a-a a-b a-c a-t aaa aab aac aak aam aao aas aat aau ab- aba abb abc abk abm abo abs abt abu ac- aca acb acc ack acm aco acs act acu aka akb akc akk akm ako aks aku ama amb amc amk amm amo ams amt amu aoa aob aoc aok aom aoo aos aot aou as- asa asb asc ask asm aso ass ast asu at- ata atb atc atm ato ats att atu au- aua aub auc auk aum auo aus aut b-u baa bab bac bak bam bao bas bat bau bba bbb bbc bbk bbm bbo bbs bbt bbu bca bcb bcc bck bcm bco bcs bct bcu bka bkb bkc bkk bkm bko bks bkt bma bmb bmc bmk bmm bmo bms bmt bmu boa bob boc bok bom boo bos bot bou bsa bsb bsc bsk bsm bso bss bst bsu bta btb btc btk btm bto bts btt btu bua bub buc buk bum buo bus but buu c-- caa cab cac cak cam cao cas cat cau cba cbb cbc cbk cbm cbo cbs cbt cbu cca ccb ccc cck ccm cco ccs cct ccu cka ckb ckc ckm cko cks ckt cma cmb cmc cmk cmm cmo cms cmt cmu co- coa cob coc cok com coo cos cot cou csa csb csc csk csm cso css cst csu cta ctb ctc ctk ctm cto cts ctt ctu cua cub cuc cuk cum cuo cus cut cuu k-t ka- kaa kab kac kak kam kao kas kat kau kba kbb kbc kbk kbm kbo kbs kbu kca kcb kcc kck kcm kcs kct kcu kkb kkc kkk kkm kks kkt kku kma kmb kmc kmk kmm kmo kms kmt kmu koa kob koc kok kom koo kos kot kou ksa ksb ksc ksk ksm kso kss kst ksu kta ktb ktc ktk ktm kto kts ktt ktu kub kuc kuk kum kus kut kuu m-o maa mab mac mak mam mao mas mat mau mba mbb mbc mbk mbm mbo mbs mbt mbu mc- mca mcb mcc mck mcm mco mcs mct mcu mka mkb mkc mkk mkm mko mks mkt mku mma mmb mmc mmk mmm mmo mms mmt mmu moa mob moc mok mom moo mos mot mou msa msb msc msk msm mso mss mst msu mta mtb mtc mtk mtm mto mts mtt mtu mua mub muc muk mum mus mut muu oaa oab oac oak oam oao oas oat oau ob- oba obb obc obk obm obo obs obt obu oc- oca ocb occ ock ocm oco ocs oct ocu oka okb okc okk oko oks oku om- oma omb omc omm omo oms omt omu oo- ooa oob ooc ook oom ooo oos oot os- osa osb osc osk osm oso oss ost osu ot- ota otb otc otk otm oto ots ott otu ou- oua ouc ouk oum ouo ous out saa sab sac sak sam sao sas sat sau sba sbb sbc sbk sbm sbo sbs sbt sbu sca scb scc sck scm sco scs sct scu sk- ska skb skc skk skm sko sks skt sku sma smb smc smk smm smo sms smt smu soa sob soc sok som soo sos sot sou ss- ssa ssb ssc ssk ssm sso sss sst ssu sta stb stc stk stm sto sts stt stu sua sub suc suk sum suo sus sut suu taa tab tac tak tam tao tas tat tau tba tbb tbc tbk tbm tbo tbs tbt tbu tca tcb tcc tck tcm tco tcs tct tcu tka tkb tkc tkk tkm tko tks tkt tma tmb tmc tmk tmm tmo tms tmt tmu to- toa tob toc tok tom too tos tot tou tsa tsb tsc tsk tsm tso tss tst tsu tta ttb ttc ttk ttm tto tts ttt ttu tua tub tuc tuk tum tuo tus tut tuu ua- uaa uab uac uak uam uao uas uat uau uba ubb ubc ubk ubo ubs ubt ubu uca ucb ucc uck ucm uco ucs uct ucu uka ukb ukc ukk uku um- uma umb umc umm umo ums umt umu uoa uob uoc uok uom uoo uos uot usa usb usc usk usm uso uss ust usu uta utb utc utk utm uto uts utt utu uua uuc uum uus uut uuu