-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aar aas aat aau aav ab- aba abb abc abe abi abr abs abt abu abv ac- aca acb acc ace aci acr acs act acu acv aea aeb aec aee aei aer aes aet aeu aev ai- aia aib aic aie aii air ais ait aiu aiv ar- ara arb arc are ari arr ars art aru arv as- asa asb asc ase asi asr ass ast asu asv at- ata atb atc ate ati atr ats att atu atv au- aua aub auc aue aui aur aus aut auv av- ava avb avc ave avi avr avs avt avu b-u baa bab bac bae bai bar bas bat bau bav bba bbb bbc bbe bbi bbr bbs bbt bbu bca bcb bcc bce bci bcr bcs bct bcu bcv be- bea beb bec bee bei ber bes bet beu bev bi- bia bib bic bie bii bir bis bit biu biv bra brb bre bri brr brs brt bru brv bsa bsb bsc bse bsi bsr bss bst bsu bsv bta btb btc bte bti btr bts btt btu btv bua bub buc bue bui bur bus but buu bva bvb bvc bve bvi bvr bvs bvt bvu bvv c-- caa cab cac cae cai car cas cat cau cav cba cbb cbc cbe cbi cbr cbs cbt cbu cbv cca ccb ccc cce cci ccr ccs cct ccu ccv ce- cea ceb cec cee cei cer ces cet ceu cev ci- cia cib cic cie cii cir cis cit ciu civ cra crb crc cre cri crr crs crt cru crv csa csb csc cse csi csr css cst csu csv cta ctb ctc cte cti ctr cts ctt ctu ctv cua cub cuc cue cui cur cus cut cuu cuv cva cvb cvc cve cvi cvr cvs cvt cvu cvv eaa eab eac eae eai ear eas eat eau eav eba ebb ebc ebe ebi ebr ebs ebt ebu ebv ec- eca ecb ecc ece eci ecr ecs ect ecu ecv eea eeb eec eee eer ees eet eev eia eib eic eie eii eir eis eit eiu eiv era erb erc ere eri err ers ert eru erv es- esa esb esc ese esi esr ess est esu esv eta etb etc ete eti etr ets ett etu etv eu- eua eub euc eue eui eur eus eut euv eva evb evc eve evi evr evs evt evv i-v ia- iaa iab iac iae iai iar ias iat iau iav iba ibb ibc ibe ibi ibr ibs ibt ibu ibv ica icb icc ice ici icr ics ict icu icv ie- iea iec iee iei ier ies iet iev iia iib iic iie iii iir iis iit iiu ir- ira irb irc ire iri irr irs irt iru irv is- isa isb isc ise isi isr iss ist isu isv ita itb itc ite iti its itt itu itv iu- iua iub iuc iue iui iur ius iut iva ivb ivc ive ivi ivr ivs ivt ivu ivv ra- raa rab rac rae rai rar ras rat rau rav rba rbb rbc rbe rbi rbr rbs rbt rbu rca rcb rcc rce rci rcr rcs rct rcu rcv re- rea reb rec ree rei rer res ret reu rev ria rib ric rie rii rir ris rit riv rra rrb rrc rri rrr rrs rrt rru rsa rsb rsc rse rsi rsr rss rst rsu rsv rta rtb rtc rte rti rtr rts rtt rtu rtv rua rub ruc rue rui rur rus rut ruu ruv rva rvb rvc rve rvi rvr rvs rvt rvu rvv saa sab sac sae sai sar sas sat sau sav sba sbb sbc sbe sbi sbr sbs sbt sbu sbv sca scb scc sce sci scr scs sct scu scv se- sea seb sec see sei ser ses set seu sev sia sib sic sie sii sir sis sit siu siv sr- sra srb src sre sri srr srs srt srv ss- ssa ssb ssc sse ssi ssr sss sst ssu ssv sta stb stc ste sti str sts stt stu stv sua sub suc sue sui sur sus sut suu suv sva svb svc sve svi svr svs svt svu svv taa tab tac tae tai tar tas tat tau tav tba tbb tbc tbe tbi tbr tbs tbt tbu tbv tca tcb tcc tce tci tcr tcs tct tcu tcv te- tea teb tec tee tei ter tes tet teu tev tia tib tic tie tii tir tis tit tiu tiv tra trb trc tre tri trr trs trt tru trv tsa tsb tsc tse tsi tsr tss tst tsu tsv tta ttb ttc tte tti ttr tts ttt ttu ttv tua tub tuc tue tui tur tus tut tuu tuv tva tvb tvc tve tvi tvr tvs tvt tvu ua- uaa uab uac uae uai uar uas uat uau uav uba ubb ubc ube ubi ubr ubs ubt ubu ubv uca ucb ucc uce uci ucr ucs uct ucu ucv uea ueb uec uee uei uer ues uet uia uib uic uie uii uir uis uit uiu ur- ura urb urc ure uri urr urs urt uru usa usb usc use usi usr uss ust usu usv uta utb utc ute uti utr uts utt utu utv uua uuc uue uur uus uut uuu uva uvb uvc uve uvs uvu uvv v-a v-e vaa vab vac vae vai var vas vat vau vav vba vbc vbi vbr vbs vbv vca vcc vce vci vcr vcs vct vcu vea veb vec vee vei ver ves vet veu vi- via vib vic vie vii vir vis vit viu viv vra vrb vrc vre vri vrr vrs vrt vru vsa vsb vsc vse vsi vsr vss vst vsu vsv vta vtb vtc vte vti vtr vts vtt vtu vtv vue vur vus vut vuv vva vvb vvc vvi vvr vvs vvt vvv