-er a-a a-b a-c a-t a-z aaa aab aac aae aao aar aat aaz ab- aba abb abc abe abo abr abt abz ac- aca acb acc ace aco acr act acz aea aeb aec aee aeo aer aet aez aoa aob aoc aoe aoo aor aot ar- ara arb arc are aro arr art arz at- ata atb atc ate ato atr att atz az- aza azb aze azo azt azz baa bab bac bae bao bar bat baz bba bbb bbc bbe bbo bbr bbt bca bcb bcc bce bco bcr bct bcz be- bea beb bec bee beo ber bet bez boa bob boc boe boo bor bot boz bra brb bre bro brr brt brz bta btb btc bte bto btr btt btz bza bze bzo bzr bzz c-- caa cab cac cae cao car cat caz cba cbb cbc cbe cbo cbr cbt cbz cca ccb ccc cce cco ccr cct ccz ce- cea ceb cec cee ceo cer cet cez co- coa cob coc coe coo cor cot coz cra crb crc cre cro crr crt crz cta ctb ctc cte cto ctr ctt ctz cz- czc cze czo czt eaa eab eac eae eao ear eat eaz eba ebb ebc ebe ebo ebr ebt ec- eca ecb ecc ece eco ecr ect eea eeb eec eee eeo eer eet eo- eoa eob eoc eoe eoo eor eot era erb erc ere ero err ert erz eta etb etc ete eto etr ett etz eze ezo ezr ezz oaa oab oac oae oao oar oat ob- oba obb obc obe obo obr obt oc- oca ocb occ oco ocr oct ocz oea oeb oec oee oeo oer oet oo- ooa oob ooc ooo oor oot or- ora orb orc ore oro orr ort orz ot- ota otb otc ote oto otr ott otz oza oze ozo ozt ozz ra- raa rab rac rae rao rar rat raz rba rbb rbc rbe rbo rbr rbt rca rcb rcc rce rco rcr rct re- rea reb rec ree reo rer ret rez roa rob roc roe roo ror rot roz rra rrb rrc rrr rrt rta rtb rtc rte rto rtr rtt rtz rza rzb rze rzo taa tab tac tae tao tar tat taz tba tbb tbc tbe tbo tbr tbt tbz tca tcb tcc tce tco tcr tct te- tea teb tec tee teo ter tet tez to- toa tob toc toe too tor tot toz tra trb trc tre tro trr trt trz tta ttb ttc tte tto ttr ttt tza tze zaa zab zac zao zar zat zaz zbb zbc zbr zbt zce zco zea zeb zec zee zeo zer zet zez zo- zoa zob zoc zoe zoo zor zot zro zta zte ztr zzr zzt zzz

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aaco aacr aact aaea aaec aaoe aaoo aara aarc aare aaro aart aata aatc aatt abaa abab abac abae abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcr abct abec abee aber abet abez aboa abob aboo abor abot abra abrc abro abta abza ac-t acaa acab acac acae acar acat acba acca accc acce acco acct ace- acea acec acer acet acoa acoe acor acot acr- acra acrc acre acro acrr acta actc acte acto actt aeac aecb aect aeer aer- aera aerc aero aeta aetc aeto aetr aett aoba aoca aoce aora aorb aort aotc arab arac arae arar arat arba arbe arc- arca arce arco arct area arec aree areo aret aroa arob aroe aroo aror aroz arr- arra arrc arre arro arrr arrt arta artc arte arto artr artz arza arzo at-t ataa atab atac atae atar atat atca atcc atco atcr atea atec atee ateo ater atez atob atoc atoe ator atot atoz atra atrc atre atro atta atte atto attr aza- azab azar azat azaz azca azer azet azo- azoo azor azot azra azza azzo baaa baar baat baaz baba babb babe babo babr bac- baca bacc bace baco bact bacz baer baez bar- bara barb barc bare baro barr bart barz bata batc bate bato batt batz baza baze bazo bbbb bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bcor bcoz bcra bctc bear beat beba bebb bebe bebo beca beeb beer beet beo- beor beot bera berc bere bero berr bert beta betc bete beto bett betz beze boab boac boar boat boaz boba bobb bobe bobo boca boce boco boea boec boee boeo boer boet boob booc booe boor boot booz bor- bora bore boro borr bort borz bota botb bote boto bott boza bozo brab brac brae brao brat braz brca brcb brce brea breb brec bree breo brer bret brez broa brob broc broe broo bror brot broz brrr brtc brza btaa btcc btec btob btor btrc btrt bttb bzer bzoe bzzt bzzz c-bo caaa caab caac caat caba cabe cabo cac- caca cacc cace caco cacr caec caer caor caoz cara carb carc care caro carr cart cat- cata catb catc cate cato catt catz caza caze cazo cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbot cbre cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccee ccob ccoc ccra ccrc ccre ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece ceco cect ceeb ceec ceor cer- cera cerc cere cero cert cet- ceta cete ceto ceza ceze coat coba cobb cobe cobo coca coce coco coct coob coot cor- cora corb corc core coro corr cort cota cotb cotc cote coto cott coze cozz crab crac crar crat crbc crca crcc crce crcr crcz cre- crea creb crec cree creo cret crob croc croe croo cror crot croz crrt crtc ctab ctae ctba ctca ctec ctor ctot ctrc ctta czar eaba eaca eacc eaec eara earb eare earo eart eata eate ebac ebba ebbc ebbo ebbr ebcc