-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aam aao aar aas aat ab- aba abb abc abi abk abm abo abr abs abt ac- aca acb acc aci ack acm aco acr acs act ai- aia aib aic aii aik aim aio air ais ait aka akb akc aki akk akm ako akr aks ama amb amc ami amk amm amo amr ams amt aoa aob aoc aoi aok aom aoo aor aos aot ar- ara arb arc ari ark arm aro arr ars art as- asa asb asc asi ask asm aso asr ass ast at- ata atb atc ati atm ato atr ats att baa bab bac bai bak bam bao bar bas bat bba bbb bbc bbi bbk bbm bbo bbr bbs bbt bca bcb bcc bci bck bcm bco bcr bcs bct bi- bia bib bic bii bik bim bio bir bis bit bka bkb bkc bkk bkm bko bkr bks bkt bma bmb bmc bmi bmk bmm bmo bmr bms bmt boa bob boc boi bok bom boo bor bos bot bra brb bri brk brm bro brr brs brt bsa bsb bsc bsi bsk bsm bso bsr bss bst bta btb btc bti btk btm bto btr bts btt c-- caa cab cac cai cak cam cao car cas cat cba cbb cbc cbi cbk cbm cbo cbr cbs cbt cca ccb ccc cci cck ccm cco ccr ccs cct ci- cia cib cic cii cik cim cio cir cis cit cka ckb ckc cki ckm cko cks ckt cma cmb cmc cmi cmk cmm cmo cmr cms cmt co- coa cob coc coi cok com coo cor cos cot cra crb crc cri crk crm cro crr crs crt csa csb csc csi csk csm cso csr css cst cta ctb ctc cti ctk ctm cto ctr cts ctt ia- iaa iab iac iai iam iao iar ias iat iba ibb ibc ibi ibk ibm ibo ibr ibs ibt ica icb icc ici ick icm ico icr ics ict iia iib iic iii iim iio iir iis iit ika ikb ikc iki ikk iko ikr iks ikt im- ima imb imc imi imm imo ims imt io- ioa iob ioc ioi iom ioo ior ios iot ir- ira irb irc iri irk irm iro irr irs irt is- isa isb isc isi isk ism iso isr iss ist ita itb itc iti itk itm ito its itt k-t ka- kaa kab kac kai kak kam kao kar kas kat kba kbb kbc kbi kbk kbm kbo kbr kbs kca kcb kcc kci kck kcm kcr kcs kct kia kib kic kii kik kim kio kir kis kit kkb kkc kki kkk kkm kkr kks kkt kma kmb kmc kmi kmk kmm kmo kms kmt koa kob koc koi kok kom koo kor kos kot kra krc kri krk kro krr krs krt ksa ksb ksc ksi ksk ksm kso ksr kss kst kta ktb ktc ktk ktm kto ktr kts ktt m-o m-r maa mab mac mai mak mam mao mar mas mat mba mbb mbc mbi mbk mbm mbo mbr mbs mbt mc- mca mcb mcc mci mck mcm mco mcr mcs mct mi- mia mib mic mii mik mim mio mir mis mit mka mkb mkc mkk mkm mko mkr mks mkt mma mmb mmc mmi mmk mmm mmo mmr mms mmt moa mob moc moi mok mom moo mor mos mot mra mrb mrc mri mrk mrm mro mrr mrs mrt msa msb msc msi msk msm mso msr mss mst mta mtb mtc mti mtk mtm mto mtr mts mtt o-i oaa oab oac oai oak oam oao oar oas oat ob- oba obb obc obi obk obm obo obr obs obt oc- oca ocb occ oci ock ocm oco ocr ocs oct oia oib oic oii oik oim oio oir ois oit oka okb okc oki okk oko okr oks om- oma omb omc omi omm omo omr oms omt oo- ooa oob ooc ooi ook oom ooo oor oos oot or- ora orb orc ori ork orm oro orr ors ort os- osa osb osc osi osk osm oso osr oss ost ot- ota otb otc oti otk otm oto otr ots ott ra- raa rab rac rai rak ram rao rar ras rat rba rbb rbc rbi rbk rbm rbo rbr rbs rbt rca rcb rcc rci rcm rco rcr rcs rct ria rib ric rii rik rim rio rir ris rit rkb rkc rkk rkm rko rks rkt rma rmb rmc rmi rmm rmo rmr rms rmt roa rob roc roi rok rom roo ror ros rot rra rrb rrc rri rrk rrm rrr rrs rrt rsa rsb rsc rsi rsk rsm rso rsr rss rst rta rtb rtc rti rtk rtm rto rtr rts rtt saa sab sac sai sak sam sao sar sas sat sba sbb sbc sbi sbk sbm sbo sbr sbs sbt sca scb scc sci sck scm sco scr scs sct sia sib sic sii sik sim sio sir sis sit sk- ska skb skc ski skk skm sko skr sks skt sma smb smc smi smk smm smo smr sms smt soa sob soc soi sok som soo sor sos sot sr- sra srb src sri srk srm sro srr srs srt ss- ssa ssb ssc ssi ssk ssm sso ssr sss sst sta stb stc sti stk stm sto str sts stt taa tab tac tai tak tam tao tar tas tat tba tbb tbc tbi tbk tbm tbo tbr tbs tbt tca tcb tcc tci tck tcm tco tcr tcs tct tia tib tic tii tik tim tio tir tis tit tka tkb tkc tkk tkm tko tkr tks tkt tma tmb tmc tmi tmk tmm tmo tmr tms tmt to- toa tob toc toi tok tom too tor tos tot tra trb trc tri trk trm tro trr trs trt tsa tsb tsc tsi tsk tsm tso tsr tss tst tta ttb