-ic a-a a-b a-c a-i a-t aaa aab aac aai aar aas aat aav ab- aba abb abc abi abr abs abt abv ac- aca acb acc aci acr acs act acv ai- aia aib aic aii air ais ait aiv ar- ara arb arc ari arr ars art arv as- asa asb asc asi asr ass ast asv at- ata atb atc ati atr ats att atv av- ava avb avc avi avr avs avt baa bab bac bai bar bas bat bav bba bbb bbc bbi bbr bbs bbt bca bcb bcc bci bcr bcs bct bcv bi- bia bib bic bii bir bis bit biv bra brb bri brr brs brt brv bsa bsb bsc bsi bsr bss bst bsv bta btb btc bti btr bts btt btv bva bvb bvc bvi bvr bvs bvt bvv c-- caa cab cac cai car cas cat cav cba cbb cbc cbi cbr cbs cbt cbv cca ccb ccc cci ccr ccs cct ccv ci- cia cib cic cii cir cis cit civ cra crb crc cri crr crs crt crv csa csb csc csi csr css cst csv cta ctb ctc cti ctr cts ctt ctv cva cvb cvc cvi cvr cvs cvt cvv i-v ia- iaa iab iac iai iar ias iat iav iba ibb ibc ibi ibr ibs ibt ibv ica icb icc ici icr ics ict icv iia iib iic iii iir iis iit ir- ira irb irc iri irr irs irt irv is- isa isb isc isi isr iss ist isv ita itb itc iti its itt itv iva ivb ivc ivi ivr ivs ivt ivv ra- raa rab rac rai rar ras rat rav rba rbb rbc rbi rbr rbs rbt rca rcb rcc rci rcr rcs rct rcv ria rib ric rii rir ris rit riv rra rrb rrc rri rrr rrs rrt rsa rsb rsc rsi rsr rss rst rsv rta rtb rtc rti rtr rts rtt rtv rva rvb rvc rvi rvr rvs rvt rvv saa sab sac sai sar sas sat sav sba sbb sbc sbi sbr sbs sbt sbv sca scb scc sci scr scs sct scv sia sib sic sii sir sis sit siv sr- sra srb src sri srr srs srt srv ss- ssa ssb ssc ssi ssr sss sst ssv sta stb stc sti str sts stt stv sva svb svc svi svr svs svt svv taa tab tac tai tar tas tat tav tba tbb tbc tbi tbr tbs tbt tbv tca tcb tcc tci tcr tcs tct tcv tia tib tic tii tir tis tit tiv tra trb trc tri trr trs trt trv tsa tsb tsc tsi tsr tss tst tsv tta ttb ttc tti ttr tts ttt ttv tva tvb tvc tvi tvr tvs tvt v-a vaa vab vac vai var vas vat vav vba vbc vbi vbr vbs vbv vca vcc vci vcr vcs vct vi- via vib vic vii vir vis vit viv vra vrb vrc vri vrr vrs vrt vsa vsb vsc vsi vsr vss vst vsv vta vtb vtc vti vtr vts vtt vtv vva vvb vvc vvi vvr vvs vvt vvv