-er a-a a-b a-c a-q a-t aaa aab aac aae aaq aar aat aau ab- aba abb abc abe abq abr abt abu ac- aca acb acc ace acq acr act acu aea aeb aec aee aeq aer aet aeu aqa aqc aqr aqt ar- ara arb arc are arq arr art aru at- ata atb atc ate atr att atu au- aua aub auc aue aur aut b-u baa bab bac bae baq bar bat bau bba bbb bbc bbe bbq bbr bbt bbu bca bcb bcc bce bcq bcr bct bcu be- bea beb bec bee beq ber bet beu bqc bqe bqt bra brb bre brq brr brt bru bta btb btc bte btq btr btt btu bua bub buc bue bur but buu c-- caa cab cac cae caq car cat cau cba cbb cbc cbe cbq cbr cbt cbu cca ccb ccc cce ccr cct ccu ce- cea ceb cec cee ceq cer cet ceu cqa cqb cqc cqt cra crb crc cre crq crr crt cru cta ctb ctc cte ctq ctr ctt ctu cua cub cuc cue cuq cur cut cuu eaa eab eac eae ear eat eau eba ebb ebc ebe ebq ebr ebt ebu ec- eca ecb ecc ece ecq ecr ect ecu eea eeb eec eee eer eet eqa eqe eqq eqt equ era erb erc ere erq err ert eru eta etb etc ete etr ett etu eu- eua eub euc eue eur eut qaa qac qar qat qau qba qbc qbe qbq qca qcc qct qec qee qet qqq qqu qra qrb qrc qre qrt qru qta qtc qtq qtr qu- qua que qur qut ra- raa rab rac rae raq rar rat rau rba rbb rbc rbe rbr rbt rbu rca rcb rcc rce rcr rct rcu re- rea reb rec ree req rer ret reu rqc rra rrb rrc rrq rrr rrt rru rta rtb rtc rte rtq rtr rtt rtu rua rub ruc rue rur rut ruu taa tab tac tae taq tar tat tau tba tbb tbc tbe tbr tbt tbu tca tcb tcc tce tcr tct tcu te- tea teb tec tee teq ter tet teu tra trb trc tre trq trr trt tru tta ttb ttc tte ttr ttt ttu tua tub tuc tue tur tut tuu ua- uaa uab uac uae uaq uar uat uau uba ubb ubc ube ubr ubt ubu uca ucb ucc uce ucr uct ucu uea ueb uec uee uer uet ur- ura urb urc ure urr urt uru uta utb utc ute utr utt utu uua uuc uue uur uut uuu

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aacr aact aacu aaea aaec aara aarc aare aart aaru aata aatc aatt abaa abab abac abae abar abat abau abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abra abrc abta abtu abua abue abut ac-t acaa acab acac acae acar acat acba acca accc acce acct accu ace- acea acec acer acet acr- acra acrc acre acrr acta actc acte actt actu acu- acue acur acut aeac aecb aect aeer aer- aera aerc aeta aetc aetr aett aqar aqra aqu- aqua aque arab arac arae araq arar arat arau arba arbe arc- arca arce arct area arec aree aret areu arq- arqa arr- arra arrc arre arrr arrt arru arta artc arte artr arua arub arue aruq arut at-t ataa atab atac atae ataq atar atat atca atcc atcr atea atec atee ater atra atrc atre atru atta atte attr attu atua atub atuc atur auaa aube auca auce auct auer aur- aura aure aut- aute baaa baar baat baba babb babe babr babu bac- baca bacc bace bact baer baqa baqt bar- bara barb barc bare barq barr bart baru bata batc bate batt batu bau- baur bbau bbbb bbbq bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bcra bcru bctc bcuc bear beat beau beba bebb bebe beca becu beeb beer beet beqa bera berc bere berr bert beru beta betc bete bett betu beur bque brab brac brae brat brau brca brcb brce brea breb brec bree brer bret brrr brtc bruc brue brut btaa btcc btec btrc btrt bttb buar buat buba bubb bube bubq bubu buca bucc buce bucu buea buer bueu buqa bur- bura burb bure burr burt buru but- buta bute butt caaa caab caac caat caba cabe cabu cac- caca cacc cace cacr caec caer caeu cara carb carc care carr cart cat- cata catb catc cate catt catu cauc caut cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbcu cbea cbec cbee cber cbet cbre cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc cccu ccee ccra ccrc ccre ccrt cctb cctc cctt ccuc ccut ceac cear ceat ceba cebu cec- ceca cece cect ceeb ceec ceqa cer- cera cerc cere cert cet- ceta cete crab crac crar crat crau crbc crbu crca crcc crce crcr cre- crea creb crec cree cret creu crrt crtc crub crue crut ctab ctae ctba ctca ctec ctrc ctta cuau cub- cuba cubb cube cuca cucc cuce cucq cuer cura curb cure curr curt cut- cuta cutc cute cutt eaba eaca eacc eaec eara earb eare eart eata eate ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecra ecrc ecrr ecru ect- ecta ectc ecua eeca eeea eeee eera eerc eeta eetc eete eetu equ- equa eque erat erau erba erbb erbe erca ercc erce ereb erec erer eret erra errc erre erta ertu erua erub eruc erur etat etbc etbr etcc etec etee eter etra etre etta ette ettu etua euba eubc euer eur- eura eurc eure eurt q-be qa-c qara qare qaru qcea qcue qere qerq qqqq qtar quaa quab quae quar quat quba qube qucu quee quer quet qutb qute quu- raab raat raba rabb