-er -ol bbb bbc bbe bbk bbl bbo bbr bcb bcc bce bck bcl bco bcr bcz be- beb bec bee bek bel beo ber bez bkb bkc bke bkk bkl bko bkr blb blc ble blk bll blo blr blz bob boc boe bok bol boo bor boz brb bre brk brl bro brr brz bze bzo bzr bzz c-- cbb cbc cbe cbk cbl cbo cbr cbz ccb ccc cce cck ccl cco ccr ccz ce- ceb cec cee cek cel ceo cer cez ckb ckc cko cl- clb clc cle clk cll clo clr clz co- cob coc coe cok col coo cor coz crb crc cre crk crl cro crr crz cz- czc cze czk czo ebb ebc ebe ebk ebl ebo ebr ec- ecb ecc ece eck ecl eco ecr eeb eec eee eek eel eeo eer ekb ekc eke ekl eko ekr elb elc ele elk ell elo elr elz eo- eob eoc eoe eok eol eoo eor erb erc ere erk erl ero err erz eze ezo ezr ezz k-z kbb kbc kbe kbk kbl kbo kbr kbz kcb kcc kce kck kcl kcr ke- keb kec kee kek kel keo ker kez kkb kkc kke kkk kkl kkr kl- klb klc klo klr klz kob koc koe kok kol koo kor koz krc krk krl kro krr kzo lbb lbc lbe lbk lbl lbo lbr lcb lcc lce lck lcl lco lcr leb lec lee lek lel leo ler lez lkb lkl lkr llb llc lle llk lll llo llr llz lob loc loe lok lol loo lor loz lrb lrc lrk lro lrr lrz lzo lzr ob- obb obc obe obk obl obo obr oc- ocb occ ock ocl oco ocr ocz oeb oec oee oel oeo oer okb okc oke okk okl oko okr olb olc ole olk oll olo oo- oob ooc ook ool ooo oor or- orb orc ore ork orl oro orr orz oze ozo ozz rbb rbc rbe rbk rbl rbo rbr rcb rcc rce rcl rco rcr re- reb rec ree rek rel reo rer rez rkb rkc rke rkk rko rkz rlc rle rll rlo rlr rob roc roe rok rol roo ror roz rrb rrc rrk rrl rrr rzb rze rzo zbb zbc zbl zbr zce zcl zco zeb zec zee zek zel zeo zer zez zlr zo- zob zoc zoe zok zol zoo zor zrl zro zzr zzz

bbbb bbeb bblb bbrc bcbc bccc bccl bcec bcer bcor bcoz bebb bebe bebo beck beeb beek beel beer beke beko bele belk bell belo belz beo- beok beor berc bere berk bero berr beze bleb blee blek bleo blkb blob bloc blok bloo blrc bobb bobe bobo boce bock boco boec boee boel boeo boer boke boko bole bolk boll bolo boob booc booe book bool boor booz bor- bore bork boro borr borz bozo brcb brce breb brec bree brek brel breo brer brez brkb brob broc broe brok brol broo bror broz brrr bzer bzoe bzrk bzzz c-bo cbbc cbcc cbce cbcl cbcr cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbre cbrl ccbc cccb cccc cccl ccee ccel cclc ccob ccoc ccrc ccre ccrl cec- cece ceco ceeb ceec ceel ceke cel- celc cele cell celo ceol ceor cer- cerc cere cerl cero ceze ckbc ckbe ckck ckcl ckco cker ckob ckoc ckoo ckor ckrc clec clee clek cleo cler clob cloe clok cloo clor cloz clro cobb cobe cobo coce cock coco coel cok- coke coko col- colb cole colk coll colo coob cook cool cor- corb corc core cork corl coro corr coze cozz crbc crcc crce crcr crcz cre- creb crec cree creo crkc crkl crob croc croe crok crol croo cror croz e-cl ebbc ebbo ebbr ebcc ebel eber eboe ebol eboo ebor ebro ecbc ecbe eccb eccc ecce eccl ecco ecko eco- ecol ecrc ecrl ecrr eeee eeke eele eeoc eerc eero eeze ekco ekeb ekek eker el-b elbe elbo elcb elce elco elec elee elek eleo eler elke elko elle ello elok elro elze eole eolo eore eorl erbb erbe ercc erce ereb erec erel erer erez erke erle erll erob eroc eroe erol eroo errc erre erro ezek ezel ezer ezzo k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbbz kbcb kbce kbck kbcl kbco kbcr kbcz kbeb kbec kbee kbek kbel kbeo kber kbez kbkb kbkk kbkl kbko kbkr kbkz kblb kble kbll kblo kblr kblz kbob kboc kboe kbok kboo kboz kbrb kbrc kbre kbrk kbrl kbro kbrz kbzc kbze kbzo kbzz kcbc kcbk kcbl kcbr kccb kccc kcck kccl kccr kceb kcec kcee kcel kceo kcez kckc kckk kckl kcko kckr kckz kclc kcle kclk kcll kclr kclz kcob kcoe kcol kcor kcoz kcrc kcro kcrr kcrz kcze kczo kczz kebb kebc kebe kebr keck keco kecr keek keel keer kekb kekc keke kekl keko kele kelk kell kelo keok keol ker- kerb kerc kere kerk kerl kero kerr kerz kezb keze kezr kezz kkbb kkbe kkbl kkbo kkbr kkbz kkcb kkck kkcl kkco kkcr kkez kkkk kklb kklc kkll kklo kklz kkob kkol kkoo kkor kkoz kkrb kkrc kkre kkrk kkrl kkro kkrr kkrz kkzz klbb klbc klbe klbl klcb klcc klce klck klcl klcr klcz kleb klec klee klek kleo kler klez klkc klkk klkl klko klkr kllb kllc klle kllk klob kloc kloe klok klol kloo klor kloz klrc klrk klrr klrz klzk klzr klzz kobb kobc kobe kobk kobo kobr kocb kock koel kokb kokc koke kokk koko kokr kokz kolb kolc kole kolk koll kolo kolr kolz koob kooc kook kool kooo koor kooz korb korc kore kork korl koro korr kozb koze kozk kozo kozr krbb krbe krbk krbl krbr krbz krcb krcc krce krcl krco kreb krec kree krek kreo krez krkc krke krkk krko krkr krkz krlc krle krob kroc kroe krok krol kroo kror kroz krrb krrc krre krrk krrl krro krrr krrz krze krzk krzr krzz kzbb kzbe kzbk