-er a-a a-b a-c a-q aaa aab aac aae aag aaq aar aau ab- aba abb abc abe abg abq abr abu ac- aca acb acc ace acg acq acr acu aea aeb aec aee aeg aeq aer aeu ag- aga agb agc age agg agq agr agu aqa aqc aqr ar- ara arb arc are arg arq arr aru au- aua aub auc aue aug aur b-u baa bab bac bae bag baq bar bau bba bbb bbc bbe bbg bbq bbr bbu bca bcb bcc bce bcg bcq bcr bcu be- bea beb bec bee beg beq ber beu bga bgb bgc bge bgg bgr bgu bqc bqe bra brb bre brg brq brr bru bua bub buc bue bug bur buu c-- caa cab cac cae cag caq car cau cba cbb cbc cbe cbg cbq cbr cbu cca ccb ccc cce ccg ccr ccu ce- cea ceb cec cee ceg ceq cer ceu cga cgb cgc cge cgg cgr cgu cqa cqb cqc cqg cra crb crc cre crg crq crr cru cua cub cuc cue cug cuq cur cuu eaa eab eac eae eag ear eau eba ebb ebc ebe ebg ebq ebr ebu ec- eca ecb ecc ece ecg ecq ecr ecu eea eeb eec eee eeg eer ega egb egc ege egg egr egu eqa eqe eqq equ era erb erc ere erg erq err eru eu- eua eub euc eue eug eur gaa gab gac gae gag gar gau gba gbc gbe gbg gbr gbu gca gcb gcc gce gcg gcr gcu ge- gea geb gec gee geg ger geu gga ggb ggc ggg ggr ggu gra grb grc gre grg grq grr gru gu- gua gub guc gue gug gur guu qaa qac qag qar qau qba qbc qbe qbq qca qcc qec qee qga qgc qqq qqu qra qrb qrc qre qrg qru qu- qua que qur ra- raa rab rac rae rag raq rar rau rba rbb rbc rbe rbg rbr rbu rca rcb rcc rce rcg rcr rcu re- rea reb rec ree reg req rer reu rga rgb rgc rge rgg rgr rqc rra rrb rrc rrg rrq rrr rru rua rub ruc rue rug rur ruu ua- uaa uab uac uae uag uaq uar uau uba ubb ubc ube ubg ubr ubu uca ucb ucc uce ucg ucr ucu uea ueb uec uee ueg uer uga ugb ugc uge ugg ugr ugu ur- ura urb urc ure urg urr uru uua uuc uue uug uur uuu

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aaca aacb aacc aace aacr aacu aaea aaec aage aara aarc aare aaru abaa abab abac abae abag abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abra abrc abua abue abug acaa acab acac acae acag acar acba acca accc acce accu ace- acea acec acer acga acgr acr- acra acrc acre acrr acu- acue acur aeac aecb aeer aega aer- aera aerc agac agag agar agau agba agca agcc agce agea agee ager agga agge aggu agra agre agua ague agur aqag aqar aqra aqu- aqua aque arab arac arae arag araq arar arau arba arbe arc- arca arce area arec aree areg areu arga argb arge arq- arqa arr- arra arrc arre arrg arrr arru arua arub arue arug aruq auaa aube auca auce auer auga auge aur- aura aure auug baaa baar baba babb babe babr babu bac- baca bacc bace baer baga bage bagg baqa bar- bara barb barc bare barg barq barr baru bau- baug baur bbau bbbb bbbq bbeb bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcec bcer bcra bcru bcuc beag bear beau beba bebb bebe beca becu beeb beeg beer bega begg begu beqa bera berc bere berg berr beru beur bgca bque brab brac brae brag brau brca brcb brce brea breb brec bree breg brer brrr bruc brue brug buar buba bubb bube bubq bubu buca bucc buce bucu buea buer bueu buga buge bugg buqa bur- bura burb bure burg burr buru caaa caab caac caba cabe cabg cabu cac- caca cacc cace cacr caec caer caeu caga cage cagg cagr cara carb carc care carr cauc cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbga cbgb cbre ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc cccu ccee ccga ccgc ccra ccrc ccre ccrg ccuc ceac cear ceba cebu cec- ceca cece ceeb ceec cege ceqa cer- cera cerc cere cgac cgcc cgcg cger crab crac crag crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creg creu crub crue crug cuau cub- cuba cubb cube cuca cucc cuce cucq cuer cuga cura curb cure curr eaba eaca eacc eaec eaga eage eara earb eare ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecra ecrc ecrr ecru ecua eeca eeea eeee eega eera eerc eerg egaa egae egar egba egbe egbu egcc egcg egcr egea egec egee eger eggb egge egra egre equ- equa eque erau erba erbb erbe erca ercc erce ereb erec erer erg- erga ergg erra errc erre erua erub eruc erur euba eubc euer euge eur- eura eurc eure gaar gaba gabb gabe gabr gabu gace gaea gaec gaer gaga gage gagg gagu gara garb gare garg garr gaua gaub gaue gaur gbag gc-c gcaa gcbc gccc gcrg geab gear geba gebe geca gece geer gege gegg gera gerb gere geru geue gggg grab grac grae grau grbr grcc grce grea greb grec gree greg greu grrr grua grub grue grug grur guaa guac guag guar guba gubb gubu guca guer guga gugb guge gugg gugu gura gurb gure gurg gurr guru q-be qa-c qara qare qaru qcea qcue qere qerq qqqq quaa quab quae quag quar quba qube qucu quee quer quu- raab raag raba rabb rabe rabu rac- raca racc race racq racu raec raeg raer raga