-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aar aat ab- aba abb abc abe abi abr abt ac- aca acb acc ace aci acr act aea aeb aec aee aei aer aet ai- aia aib aic aie aii air ait ar- ara arb arc are ari arr art at- ata atb atc ate ati atr att baa bab bac bae bai bar bat bba bbb bbc bbe bbi bbr bbt bca bcb bcc bce bci bcr bct be- bea beb bec bee bei ber bet bi- bia bib bic bie bii bir bit bra brb bre bri brr brt bta btb btc bte bti btr btt c-- caa cab cac cae cai car cat cba cbb cbc cbe cbi cbr cbt cca ccb ccc cce cci ccr cct ce- cea ceb cec cee cei cer cet ci- cia cib cic cie cii cir cit cra crb crc cre cri crr crt cta ctb ctc cte cti ctr ctt eaa eab eac eae eai ear eat eba ebb ebc ebe ebi ebr ebt ec- eca ecb ecc ece eci ecr ect eea eeb eec eee eer eet eia eib eic eie eii eir eit era erb erc ere eri err ert eta etb etc ete eti etr ett ia- iaa iab iac iae iai iar iat iba ibb ibc ibe ibi ibr ibt ica icb icc ice ici icr ict ie- iea iec iee iei ier iet iia iib iic iie iii iir iit ir- ira irb irc ire iri irr irt ita itb itc ite iti itt ra- raa rab rac rae rai rar rat rba rbb rbc rbe rbi rbr rbt rca rcb rcc rce rci rcr rct re- rea reb rec ree rei rer ret ria rib ric rie rii rir rit rra rrb rrc rri rrr rrt rta rtb rtc rte rti rtr rtt taa tab tac tae tai tar tat tba tbb tbc tbe tbi tbr tbt tca tcb tcc tce tci tcr tct te- tea teb tec tee tei ter tet tia tib tic tie tii tir tit tra trb trc tre tri trr trt tta ttb ttc tte tti ttr ttt

a-be a-ii aaaa aaab aaac aaae aaai aaar aaba aabb aabc aabi aabt aaca aacb aacc aace aaci aacr aact aaea aaec aaib aaic aaii aara aarc aare aari aart aata aatc aatt abaa abab abac abae abai abar abat abb- abba abbb abbe abbi abbr abbt abca abcb abcc abci abcr abct abec abee aber abet abia abib abic abie abir abit abra abrc abri abta ac-t acaa acab acac acae acai acar acat acba acca accc acce acci acct ace- acea acec acer acet aci- acia acic acie acir acr- acra acrc acre acri acrr acta actc acte acti actt aeac aebi aecb aeci aect aeer aeit aer- aera aerc aeri aeta aetc aetr aett aiai aiba aica aicc aice aicr aiea aiee aiet aiia aiib aiic aiir aira aire airi airt aita aite aiti aitr aitt arab arac arae arai arar arat arba arbe arbi arc- arca arce arci arct area arec aree arei aret aria arib arie arii arit arr- arra arrc arre arri arrr arrt arta artc arte arti artr at-t ataa atab atac atae atai atar atat atca atcc atcr atea atec atee atei ater atia atic atie atit atra atrc atre atri atta atte atti attr ba-i baaa baar baat baba babb babe babi babr bac- baca bacc bace baci bact baer baia baib baic baie bair bait bar- bara barb barc bare bari barr bart bata batc bate bati batt bbbb bbci bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcci bcec bcer bcet bcia bcie bcit bcra bctc bear beat beba bebb bebe bebi beca beci beeb beer beet beia beic beir beit bera berc bere beri berr bert beta betc bete beti bett biar biat biba bibb bibe bibi bica bicc bice bici bieb bier biet bira birb bire biri birr birt bita bitc bite bitt brab brac brae brai brat brca brcb brce brea breb brec bree brei brer bret bria bric brie brit brrr brtc btaa btcc btec btie btrc btrt bttb caaa caab caac caat caba cabe cabi cac- caca cacc cace caci cacr caec caei caer caia caib caic cair cait cara carb carc care cari carr cart cat- cata catb catc cate cati catt cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbia cbir cbit cbre cbrt cbta cbtc ccaa ccab ccac ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccee ccic ccii ccir ccra ccrc ccre ccri ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece ceci cect ceeb ceec cer- cera cerc cere ceri cert cet- ceta cete ceti ciaa ciar ciat ciba cibc cibe cibi cica cicc cici cicr cict ciee cier ciia ciii ciit cira cirb circ cire ciri cirr cirt cita citb cite citi citt crab crac crai crar crat crbc crca crcc crce crcr cre- crea creb crec cree crei cret cria crib cric crie crit crrt crtc ctab ctae ctba ctbi ctca ctec ctia ctic ctrc ctta eaba eaca eacc eaec eara earb eare eart eata eate eati ebac ebba ebbc ebbr ebcc eber ebic ebit ecaa ecac ecai ecar ecat ecbc ecbe ecca eccb eccc ecce ecci ecct ecib ecit ecra ecrc ecri ecrr ect- ecta ectc eeca eeea eeee eera eerc eeta eetc eete eica eiec eiei eier eira eire eita eitb eitc eiti eitr erat erba erbb erbe erca ercc erce ereb erec erei erer eret eria eric erie erit erra errc erre erta etai etat etbc etbr etcc etec etee eter etic etra etre etta ette etti i-be iaaa iaac iaai iaat iaba iaca iacc iacr iact iaea iaec iaia iara iarc iare iart iata iatc iate iati ibac ibar ibat ibca ibea ibec ibet ibia ibie ibra ibrc ibri ibtb ibtc icaa icab icac icai icar icat icbc icca iccb iccc