-er -ol b-p bbb bbc bbe bbk bbl bbo bbp bbr bcb bcc bce bck bcl bco bcp bcr be- beb bec bee bek bel beo bep ber bkb bkc bke bkk bkl bko bkp bkr blb blc ble blk bll blo blp blr bob boc boe bok bol boo bop bor bpb bpc bpe bpl bpo bpp bpr brb bre brk brl bro brp brr c-- cbb cbc cbe cbk cbl cbo cbp cbr ccb ccc cce cck ccl cco ccp ccr ce- ceb cec cee cek cel ceo cep cer ckb ckc cko cl- clb clc cle clk cll clo clp clr co- cob coc coe cok col coo cop cor cpb cpc cpe cpk cpl cpo cpp cpr crb crc cre crk crl cro crp crr ebb ebc ebe ebk ebl ebo ebp ebr ec- ecb ecc ece eck ecl eco ecr eeb eec eee eek eel eeo eep eer ekb ekc eke ekl eko ekp ekr elb elc ele elk ell elo elp elr eo- eob eoc eoe eok eol eoo eop eor ep- epb epc epe epl epo epp epr erb erc ere erk erl ero erp err kbb kbc kbe kbk kbl kbo kbp kbr kcb kcc kce kck kcl kcp kcr ke- keb kec kee kek kel keo kep ker kkb kkc kke kkk kkl kkp kkr kl- klb klc klo klr kob koc koe kok kol koo kop kor kpc kpe kpk kpl kpo kpp kpr krc krk krl kro krp krr l-p lbb lbc lbe lbk lbl lbo lbp lbr lcb lcc lce lck lcl lco lcp lcr leb lec lee lek lel leo lep ler lkb lkl lkp lkr llb llc lle llk lll llo llp llr lob loc loe lok lol loo lop lor lpb lpc lpe lpk lpl lpo lpp lpr lrb lrc lrk lro lrp lrr ob- obb obc obe obk obl obo obp obr oc- ocb occ ock ocl oco ocp ocr oeb oec oee oel oeo oep oer okb okc oke okk okl oko okp okr olb olc ole olk oll olo olp oo- oob ooc ook ool ooo oop oor op- opb opc ope opk opl opo opp opr or- orb orc ore ork orl oro orp orr p-p pbb pbc pbe pbk pbl pbo pbp pbr pcb pcc pce pck pcl pco pcp pcr peb pec pee pek pel peo pep per pkb pkc pke pkl pko pkp pkr plb plc ple plk pll plo plp plr pob poc poe pok pol poo pop por ppb ppc ppe ppk ppl ppo ppp ppr prb prc pre prk prl pro prp prr rbb rbc rbe rbk rbl rbo rbp rbr rcb rcc rce rcl rco rcp rcr re- reb rec ree rek rel reo rep rer rkb rkc rke rkk rko rkp rlc rle rll rlo rlp rlr rob roc roe rok rol roo rop ror rpb rpc rpe rpk rpl rpo rpp rpr rrb rrc rrk rrl rrp rrr

bbbb bbeb bblb bbpr bbrc bcbc bcbp bccc bccl bcec bcer bcor bcpl bcpp bebb bebe bebo beck beeb beek beel beep beer beke beko bele belk bell belo belp beo- beok beor bepo berc bere berk bero berr bkpr bleb blee blek bleo blkb blob bloc blok bloo blop blrc bobb bobe bobo boce bock boco boec boee boel boeo boep boer boke boko bole bolk boll bolo boob booc booe book bool boop boor bope bopp bor- bore bork boro borr bpcp bpel bpoe bprc brcb brce breb brec bree brek brel breo brep brer brkb brlp brob broc broe brok brol broo bror brrr c-bo cbbc cbcc cbce cbcl cbcp cbcr cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbpc cbpp cbre cbrl ccbc cccb cccc cccl cccp ccee ccel cclc ccob ccoc ccpe ccpl ccpp ccpr ccrc ccre ccrl ccrp cebp cec- cece ceco cecp ceeb ceec ceel ceke cel- celc cele cell celo ceol ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cerl cero cerp ckbc ckbe ckck ckcl ckco cker ckob ckoc ckoo ckor ckpc ckpr ckrc clec clee clek cleo clep cler clob cloe clok cloo clop clor clpb clpp clro cobb cobe cobo coce cock coco cocp coel coep cok- coke coko col- colb cole colk coll colo colp coob cook cool coop cope copo copp copr cor- corb corc core cork corl coro corp corr cpbc cpce cpeb cpep cper cplc cpre crbc crcc crce crcr cre- creb crec cree creo crep crkc crkl crkp crob croc croe crok crol croo crop cror crpc e-cl ebbc ebbo ebbr ebcc ebel eber eboe ebol eboo ebor ebpo ebro ecbc ecbe eccb eccc ecce eccl ecco ecko eco- ecol ecop ecpp ecrc ecrl ecrr eeee eeke eele eeoc eerc eero ekco ekeb ekek eker ekpe ekpo el-b el-p elbe elbo elcb elce elco elec elee elek eleo eler elke elko elle ello elok elpe elro eole eolo eore eorl epcc epec epee eper eple epll epoc epol epor eppc eppo eppp eprb epro eprp erbb erbe ercc erce ercp ereb erec erel erer erke erle erll erob eroc eroe erol eroo erpe errc erre erro k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbcb kbce kbck kbcl kbco kbcr kbeb kbec kbee kbek kbel kbeo kber kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblp kblr kbob kboc kboe kbok kboo kbpc kbpe kbpk kbpo kbpr kbrb kbrc kbre kbrk kbrl kbro kcbc kcbk kcbl kcbr kccb kccc kcck kccl kccr kceb kcec kcee kcel kceo kcep kckc kckk kckl kcko kckr kclc kcle kclk kcll kclr kcob kcoe kcol kcor kcpc kcpl kcpo kcpr kcrc kcro kcrp kcrr kebb kebc kebe kebr keck keco kecr keek keel keep keer kekb kekc keke kekl keko kele kelk kell kelo kelp keok keol kep- kepc kepe ker- kerb kerc kere kerk kerl kero kerp kerr kkbb kkbe kkbl kkbo kkbr kkcb kkck kkcl kkco kkcr kkkk kklb kklc kkll kklo kkob kkol kkoo kkor