-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aam aao aas aat ab- aba abb abc abi abk abm abo abs abt ac- aca acb acc aci ack acm aco acs act ai- aia aib aic aii aik aim aio ais ait aka akb akc aki akk akm ako aks ama amb amc ami amk amm amo ams amt aoa aob aoc aoi aok aom aoo aos aot as- asa asb asc asi ask asm aso ass ast at- ata atb atc ati atm ato ats att baa bab bac bai bak bam bao bas bat bba bbb bbc bbi bbk bbm bbo bbs bbt bca bcb bcc bci bck bcm bco bcs bct bi- bia bib bic bii bik bim bio bis bit bka bkb bkc bkk bkm bko bks bkt bma bmb bmc bmi bmk bmm bmo bms bmt boa bob boc boi bok bom boo bos bot bsa bsb bsc bsi bsk bsm bso bss bst bta btb btc bti btk btm bto bts btt c-- caa cab cac cai cak cam cao cas cat cba cbb cbc cbi cbk cbm cbo cbs cbt cca ccb ccc cci cck ccm cco ccs cct ci- cia cib cic cii cik cim cio cis cit cka ckb ckc cki ckm cko cks ckt cma cmb cmc cmi cmk cmm cmo cms cmt co- coa cob coc coi cok com coo cos cot csa csb csc csi csk csm cso css cst cta ctb ctc cti ctk ctm cto cts ctt ia- iaa iab iac iai iam iao ias iat iba ibb ibc ibi ibk ibm ibo ibs ibt ica icb icc ici ick icm ico ics ict iia iib iic iii iim iio iis iit ika ikb ikc iki ikk iko iks ikt im- ima imb imc imi imm imo ims imt io- ioa iob ioc ioi iom ioo ios iot is- isa isb isc isi isk ism iso iss ist ita itb itc iti itk itm ito its itt k-t ka- kaa kab kac kai kak kam kao kas kat kba kbb kbc kbi kbk kbm kbo kbs kca kcb kcc kci kck kcm kcs kct kia kib kic kii kik kim kio kis kit kkb kkc kki kkk kkm kks kkt kma kmb kmc kmi kmk kmm kmo kms kmt koa kob koc koi kok kom koo kos kot ksa ksb ksc ksi ksk ksm kso kss kst kta ktb ktc ktk ktm kto kts ktt m-o maa mab mac mai mak mam mao mas mat mba mbb mbc mbi mbk mbm mbo mbs mbt mc- mca mcb mcc mci mck mcm mco mcs mct mi- mia mib mic mii mik mim mio mis mit mka mkb mkc mkk mkm mko mks mkt mma mmb mmc mmi mmk mmm mmo mms mmt moa mob moc moi mok mom moo mos mot msa msb msc msi msk msm mso mss mst mta mtb mtc mti mtk mtm mto mts mtt o-i oaa oab oac oai oak oam oao oas oat ob- oba obb obc obi obk obm obo obs obt oc- oca ocb occ oci ock ocm oco ocs oct oia oib oic oii oik oim oio ois oit oka okb okc oki okk oko oks om- oma omb omc omi omm omo oms omt oo- ooa oob ooc ooi ook oom ooo oos oot os- osa osb osc osi osk osm oso oss ost ot- ota otb otc oti otk otm oto ots ott saa sab sac sai sak sam sao sas sat sba sbb sbc sbi sbk sbm sbo sbs sbt sca scb scc sci sck scm sco scs sct sia sib sic sii sik sim sio sis sit sk- ska skb skc ski skk skm sko sks skt sma smb smc smi smk smm smo sms smt soa sob soc soi sok som soo sos sot ss- ssa ssb ssc ssi ssk ssm sso sss sst sta stb stc sti stk stm sto sts stt taa tab tac tai tak tam tao tas tat tba tbb tbc tbi tbk tbm tbo tbs tbt tca tcb tcc tci tck tcm tco tcs tct tia tib tic tii tik tim tio tis tit tka tkb tkc tkk tkm tko tks tkt tma tmb tmc tmi tmk tmm tmo tms tmt to- toa tob toc toi tok tom too tos tot tsa tsb tsc tsi tsk tsm tso tss tst tta ttb ttc tti ttk ttm tto tts ttt