-er -ol b-u bbb bbc bbe bbk bbl bbo bbr bbu bcb bcc bce bck bcl bco bcr bcu be- beb bec bee bek bel beo ber beu bkb bkc bke bkk bkl bko bkr blb blc ble blk bll blo blr blu bob boc boe bok bol boo bor bou brb bre brk brl bro brr bru bub buc bue buk bul buo bur buu c-- cbb cbc cbe cbk cbl cbo cbr cbu ccb ccc cce cck ccl cco ccr ccu ce- ceb cec cee cek cel ceo cer ceu ckb ckc cko cl- clb clc cle clk cll clo clr clu co- cob coc coe cok col coo cor cou crb crc cre crk crl cro crr cru cub cuc cue cuk cul cuo cur cuu ebb ebc ebe ebk ebl ebo ebr ebu ec- ecb ecc ece eck ecl eco ecr ecu eeb eec eee eek eel eeo eer ekb ekc eke ekl eko ekr eku elb elc ele elk ell elo elr elu eo- eob eoc eoe eok eol eoo eor eou erb erc ere erk erl ero err eru eu- eub euc eue eul eur kbb kbc kbe kbk kbl kbo kbr kbu kcb kcc kce kck kcl kcr kcu ke- keb kec kee kek kel keo ker kkb kkc kke kkk kkl kkr kku kl- klb klc klo klr klu kob koc koe kok kol koo kor kou krc krk krl kro krr kru kub kuc kue kuk kul kur kuu lbb lbc lbe lbk lbl lbo lbr lbu lcb lcc lce lck lcl lco lcr lcu leb lec lee lek lel leo ler leu lkb lkl lkr llb llc lle llk lll llo llr llu lob loc loe lok lol loo lor lou lrb lrc lrk lro lrr lru lub luc lue luk lul luo lur luu ob- obb obc obe obk obl obo obr obu oc- ocb occ ock ocl oco ocr ocu oeb oec oee oel oeo oer okb okc oke okk okl oko okr oku olb olc ole olk oll olo olu oo- oob ooc ook ool ooo oor or- orb orc ore ork orl oro orr oru ou- ouc oue ouk oul ouo our rbb rbc rbe rbk rbl rbo rbr rbu rcb rcc rce rcl rco rcr rcu re- reb rec ree rek rel reo rer reu rkb rkc rke rkk rko rku rlc rle rll rlo rlr rlu rob roc roe rok rol roo ror rou rrb rrc rrk rrl rrr rru rub ruc rue ruk ruo rur ruu ubb ubc ube ubk ubl ubo ubr ubu ucb ucc uce uck ucl uco ucr ucu ueb uec uee uel uer ukb ukc uke ukk ukl ukr uku ulb ulc ule ulk ull ulo ulr ulu uob uoc uoe uok uol uoo uor ur- urb urc ure urk url uro urr uru uuc uue uur uuu

bbbb bbeb bblb bbrc bcbc bccc bccl bcec bcer bcor bcru bcuc bebb bebe bebo beck becu beeb beek beel beer beke beko bele belk bell belo belu beo- beok beor berc bere berk bero berr beru beuk beur blcu bleb blee blek bleo bleu blkb blob bloc blok bloo blou blrc blub blue blur bobb bobe bobo bobu boce bock boco bocu boec boee boel boeo boer boke boko boku bole bolk boll bolo bolu boob booc booe book bool boor bor- bore bork boro borr boru boue bouk boul bour brcb brce breb brec bree brek brel breo brer brkb brob broc broe brok brol broo bror brou brrr bruc brue bubb bube bubo bubu bucc buce buck buco bucu buel buer bueu buke bukk buko buku bulb bule bulk bull bulu buol bur- burb bure burk burl buro burr buru c-bo cbbc cbcc cbce cbcl cbcr cbcu cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbre cbrl ccbc cccb cccc cccl cccu ccee ccel cclc ccob ccoc ccrc ccre ccrl ccuc cebu cec- cece ceco ceeb ceec ceel ceke cel- celc cele cell celo ceol ceor ceou cer- cerc cere cerl cero ckbc ckbe ckck ckcl ckco cker ckob ckoc ckoo ckor ckrc clec clee clek cleo cler cleu clob cloe clok cloo clor clou clro club clue cobb cobe cobo cobu coce cock coco cocu coel cok- coke coko col- colb cole colk coll colo colu coob cook cool cor- corb corc core cork corl coro corr coub coue couk coul cour crbc crbu crcc crce crcr cre- creb crec cree creo creu crkc crkl crob croc croe crok crol croo cror crub crue cruk cub- cubb cube cucc cuce cuck cuek cuer cuk- cuke culb culc cule culk cull culo curb cure curl curo curr e-cl ebbc ebbo ebbr ebcc ebel eber eboe ebol eboo ebor ebro ebru ebul ebur ecbc ecbe eccb eccc ecce eccl ecco ecko eco- ecol ecou ecrc ecrl ecrr ecru eeee eeke eele eeoc eerc eero ekco ekeb ekek eker ekur el-b elbe elbo elbu elcb elce elco elec elee elek eleo eler elke elko elle ello ellu elok elro elue elul eole eolo eore eorl erbb erbe ercc erce ereb erec erel erer erke erle erll erob eroc eroe erol eroo errc erre erro erub eruc erur eubc euer eule eur- eurc eure euro k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbbu kbcb kbce kbck kbcl kbco kbcr kbcu kbeb kbec kbee kbek kbel kbeo kber kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblr kblu kbob kboc kboe kbok kboo kbrb kbrc kbre kbrk kbrl kbro kbru kbub kbuc kbue kbuk kbul kbur kbuu kcbc kcbk kcbl kcbr kcbu kccb kccc kcck kccl kccr kccu kceb kcec kcee kcel kceo kceu kckc kckk kckl kcko kckr kclc kcle kclk kcll kclr kclu kcob kcoe kcol kcor kcou kcrc kcro kcrr kcru kcub kcue kcuk kcul kebb kebc kebe kebr kebu keck keco kecr keek keel keer kekb kekc keke kekl keko keku kele kelk kell kelo kelu keok keol ker- kerb kerc kere kerk kerl kero