-ic a-a a-b a-c a-i a-t aaa aab aac aai aam aao aar aas aat ab- aba abb abc abi abm abo abr abs abt ac- aca acb acc aci acm aco acr acs act ai- aia aib aic aii aim aio air ais ait ama amb amc ami amm amo amr ams amt aoa aob aoc aoi aom aoo aor aos aot ar- ara arb arc ari arm aro arr ars art as- asa asb asc asi asm aso asr ass ast at- ata atb atc ati atm ato atr ats att baa bab bac bai bam bao bar bas bat bba bbb bbc bbi bbm bbo bbr bbs bbt bca bcb bcc bci bcm bco bcr bcs bct bi- bia bib bic bii bim bio bir bis bit bma bmb bmc bmi bmm bmo bmr bms bmt boa bob boc boi bom boo bor bos bot bra brb bri brm bro brr brs brt bsa bsb bsc bsi bsm bso bsr bss bst bta btb btc bti btm bto btr bts btt c-- caa cab cac cai cam cao car cas cat cba cbb cbc cbi cbm cbo cbr cbs cbt cca ccb ccc cci ccm cco ccr ccs cct ci- cia cib cic cii cim cio cir cis cit cma cmb cmc cmi cmm cmo cmr cms cmt co- coa cob coc coi com coo cor cos cot cra crb crc cri crm cro crr crs crt csa csb csc csi csm cso csr css cst cta ctb ctc cti ctm cto ctr cts ctt ia- iaa iab iac iai iam iao iar ias iat iba ibb ibc ibi ibm ibo ibr ibs ibt ica icb icc ici icm ico icr ics ict iia iib iic iii iim iio iir iis iit im- ima imb imc imi imm imo ims imt io- ioa iob ioc ioi iom ioo ior ios iot ir- ira irb irc iri irm iro irr irs irt is- isa isb isc isi ism iso isr iss ist ita itb itc iti itm ito its itt m-o m-r maa mab mac mai mam mao mar mas mat mba mbb mbc mbi mbm mbo mbr mbs mbt mc- mca mcb mcc mci mcm mco mcr mcs mct mi- mia mib mic mii mim mio mir mis mit mma mmb mmc mmi mmm mmo mmr mms mmt moa mob moc moi mom moo mor mos mot mra mrb mrc mri mrm mro mrr mrs mrt msa msb msc msi msm mso msr mss mst mta mtb mtc mti mtm mto mtr mts mtt o-i oaa oab oac oai oam oao oar oas oat ob- oba obb obc obi obm obo obr obs obt oc- oca ocb occ oci ocm oco ocr ocs oct oia oib oic oii oim oio oir ois oit om- oma omb omc omi omm omo omr oms omt oo- ooa oob ooc ooi oom ooo oor oos oot or- ora orb orc ori orm oro orr ors ort os- osa osb osc osi osm oso osr oss ost ot- ota otb otc oti otm oto otr ots ott ra- raa rab rac rai ram rao rar ras rat rba rbb rbc rbi rbm rbo rbr rbs rbt rca rcb rcc rci rcm rco rcr rcs rct ria rib ric rii rim rio rir ris rit rma rmb rmc rmi rmm rmo rmr rms rmt roa rob roc roi rom roo ror ros rot rra rrb rrc rri rrm rrr rrs rrt rsa rsb rsc rsi rsm rso rsr rss rst rta rtb rtc rti rtm rto rtr rts rtt saa sab sac sai sam sao sar sas sat sba sbb sbc sbi sbm sbo sbr sbs sbt sca scb scc sci scm sco scr scs sct sia sib sic sii sim sio sir sis sit sma smb smc smi smm smo smr sms smt soa sob soc soi som soo sor sos sot sr- sra srb src sri srm sro srr srs srt ss- ssa ssb ssc ssi ssm sso ssr sss sst sta stb stc sti stm sto str sts stt taa tab tac tai tam tao tar tas tat tba tbb tbc tbi tbm tbo tbr tbs tbt tca tcb tcc tci tcm tco tcr tcs tct tia tib tic tii tim tio tir tis tit tma tmb tmc tmi tmm tmo tmr tms tmt to- toa tob toc toi tom too tor tos tot tra trb trc tri trm tro trr trs trt tsa tsb tsc tsi tsm tso tsr tss tst tta ttb ttc tti ttm tto ttr tts ttt