-er a-a a-b a-c a-t a-z aaa aab aac aae aar aat aau aaz ab- aba abb abc abe abr abt abu abz ac- aca acb acc ace acr act acu acz aea aeb aec aee aer aet aeu aez ar- ara arb arc are arr art aru arz at- ata atb atc ate atr att atu atz au- aua aub auc aue aur aut auz az- aza azb aze azt azu azz b-u baa bab bac bae bar bat bau baz bba bbb bbc bbe bbr bbt bbu bca bcb bcc bce bcr bct bcu bcz be- bea beb bec bee ber bet beu bez bra brb bre brr brt bru brz bta btb btc bte btr btt btu btz bua bub buc bue bur but buu buz bza bze bzr bzu bzz c-- caa cab cac cae car cat cau caz cba cbb cbc cbe cbr cbt cbu cbz cca ccb ccc cce ccr cct ccu ccz ce- cea ceb cec cee cer cet ceu cez cra crb crc cre crr crt cru crz cta ctb ctc cte ctr ctt ctu ctz cua cub cuc cue cur cut cuu cuz cz- czc cze czt eaa eab eac eae ear eat eau eaz eba ebb ebc ebe ebr ebt ebu ec- eca ecb ecc ece ecr ect ecu eea eeb eec eee eer eet era erb erc ere err ert eru erz eta etb etc ete etr ett etu etz eu- eua eub euc eue eur eut eze ezr ezz ra- raa rab rac rae rar rat rau raz rba rbb rbc rbe rbr rbt rbu rca rcb rcc rce rcr rct rcu re- rea reb rec ree rer ret reu rez rra rrb rrc rrr rrt rru rta rtb rtc rte rtr rtt rtu rtz rua rub ruc rue rur rut ruu ruz rza rzb rze taa tab tac tae tar tat tau taz tba tbb tbc tbe tbr tbt tbu tbz tca tcb tcc tce tcr tct tcu te- tea teb tec tee ter tet teu tez tra trb trc tre trr trt tru trz tta ttb ttc tte ttr ttt ttu tua tub tuc tue tur tut tuu tuz tza tze tzu ua- uaa uab uac uae uar uat uau uaz 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 urz uta utb utc ute utr utt utu utz uua uuc uue uur uut uuu uza uzb uzu zaa zab zac zar zat zaz zbb zbc zbr zbt zce zea zeb zec zee zer zet zez zta zte ztr zub zuc zur zut zuz zzr zzt zzz

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 abez abra abrc abta abtu abua abue abut abza abzu 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 arab arac arae arar arat arau arba arbe arc- arca arce arct area arec aree aret areu arr- arra arrc arre arrr arrt arru arta artc arte artr artz arua arub arue arut arza arzu at-t ataa atab atac atae atar atat atca atcc atcr atea atec atee ater atez atra atrc atre atru atta atte attr attu atua atub atuc atur auaa aube auca auce auct auer aur- aura aure aut- aute aza- azab azar azat azaz azca azer azet azra azua azur azza baaa baar baat baaz baba babb babe babr babu bac- baca bacc bace bact bacz baer baez bar- bara barb barc bare barr bart baru barz bata batc bate batt batu batz bau- baur baza baze bbau bbbb 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 bera berc bere berr bert beru beta betc bete bett betu betz beur beze bezu brab brac brae brat brau braz brca brcb brce brea breb brec bree brer bret brez brrr brtc bruc brue brut bruz brza btaa btcc btec btrc btrt bttb buar buat buba bubb bube bubu buca bucc buce bucu bucz buea buer bueu bur- bura burb bure burr burt buru burz but- buta bute butt butz buuz buza buze buzz bzer bzzt bzzz 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 catz cauc caut caza caze 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 cer- cera cerc cere cert cet- ceta cete ceza ceze crab crac crar crat crau crbc crbu crca crcc crce crcr crcz cre- crea creb crec cree cret creu crrt crtc crub crue crut cruz ctab ctae ctba ctca ctec ctrc ctta cuau cub- cuba cubb cube cuca cucc cuce cuer cura curb cure curr curt cut- cuta cutc cute cutt czar 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 eeze erat erau eraz erba erbb erbe erca ercc erce ereb erec erer eret erez erra errc erre erta ertu ertz erua erub eruc erur etat etbc etbr