-er -ol bbb bbc bbe bbk bbl bbo bbr bbt bcb bcc bce bck bcl bco bcr bct be- beb bec bee bek bel beo ber bet bkb bkc bke bkk bkl bko bkr bkt blb blc ble blk bll blo blr blt bob boc boe bok bol boo bor bot brb bre brk brl bro brr brt btb btc bte btk btl bto btr btt c-- cbb cbc cbe cbk cbl cbo cbr cbt ccb ccc cce cck ccl cco ccr cct ce- ceb cec cee cek cel ceo cer cet ckb ckc cko ckt cl- clb clc cle clk cll clo clr clt co- cob coc coe cok col coo cor cot crb crc cre crk crl cro crr crt ctb ctc cte ctk ctl cto ctr ctt ebb ebc ebe ebk ebl ebo ebr ebt ec- ecb ecc ece eck ecl eco ecr ect eeb eec eee eek eel eeo eer eet ekb ekc eke ekl eko ekr ekt elb elc ele elk ell elo elr elt eo- eob eoc eoe eok eol eoo eor eot erb erc ere erk erl ero err ert etb etc ete etk etl eto etr ett k-t kbb kbc kbe kbk kbl kbo kbr kcb kcc kce kck kcl kcr kct ke- keb kec kee kek kel keo ker ket kkb kkc kke kkk kkl kkr kkt kl- klb klc klo klr klt kob koc koe kok kol koo kor kot krc krk krl kro krr krt ktb ktc kte ktk ktl kto ktr ktt lbb lbc lbe lbk lbl lbo lbr lbt lcb lcc lce lck lcl lco lcr lct leb lec lee lek lel leo ler let lkb lkl lkr lkt llb llc lle llk lll llo llr llt lob loc loe lok lol loo lor lot lrb lrc lrk lro lrr lrt ltb ltc lte ltk ltl lto ltr ltt ob- obb obc obe obk obl obo obr obt oc- ocb occ ock ocl oco ocr oct oeb oec oee oel oeo oer oet okb okc oke okk okl oko okr olb olc ole olk oll olo olt oo- oob ooc ook ool ooo oor oot or- orb orc ore ork orl oro orr ort ot- otb otc ote otk otl oto otr ott rbb rbc rbe rbk rbl rbo rbr rbt rcb rcc rce rcl rco rcr rct re- reb rec ree rek rel reo rer ret rkb rkc rke rkk rko rkt rlc rle rll rlo rlr rlt rob roc roe rok rol roo ror rot rrb rrc rrk rrl rrr rrt rtb rtc rte rtk rtl rto rtr rtt tbb tbc tbe tbk tbl tbo tbr tbt tcb tcc tce tck tcl tco tcr tct te- teb tec tee tek tel teo ter tet tkb tkc tke tkk tkl tko tkr tkt tlc tle tlk tll tlo tlr tlt to- tob toc toe tok tol too tor tot trb trc tre trk trl tro trr trt ttb ttc tte ttk ttl tto ttr ttt

bbbb bbeb bbet bblb bbrc bcbc bccc bccl bcec bcer bcet bcor bctc bebb bebe bebo beck beeb beek beel beer beet beke beko bele belk bell belo belt beo- beok beor beot berc bere berk bero berr bert betc bete beto bett blbt bleb blee blek bleo blet blkb blob bloc blok bloo blot blrc bobb bobe bobo boce bock boco boec boee boel boeo boer boet boke boko bole bolk boll bolo bolt boob booc booe book bool boor boot bor- bore bork boro borr bort botb bote boto bott brcb brce breb brec bree brek brel breo brer bret brkb brob broc broe brok brol broo bror brot brrr brtc btcc btcl btec btek btob btor btrc btrt bttb c-bo cbbc cbcc cbce cbcl cbcr cbct cbec cbee cber cbet cbkl cbko cbkr cblb cblc cbol cbot cbre cbrl cbrt cbtc cbtl ccbc cccb cccc cccl ccee ccel cclc ccob ccoc ccrc ccre ccrl ccrt cctb cctc cctl cctt cec- cece ceco cect ceeb ceec ceel ceke cel- celc cele cell celo celt ceol ceor cer- cerc cere cerl cero cert cet- cete ceto ckbc ckbe ckck ckcl ckco cker ckob ckoc ckoo ckor ckot ckrc cktb clec clee clek cleo cler clet clob cloe clok cloo clor clot clro cltb cltc cobb cobe cobo coce cock coco coct coel cok- coke coko col- colb cole colk coll colo colt coob cook cool coot cor- corb corc core cork corl coro corr cort cotb cotc cote coto cott crbc crcc crce crcr cre- creb crec cree creo cret crkc crkl crob croc croe crok crol croo cror crot crrt crtc crtl ctec ctle ctol ctor ctot ctrc ctrl e-cl ebbc ebbo ebbr ebcc ebel eber eboe ebol eboo ebor ebro ecbc ecbe eccb eccc ecce eccl ecco ecct ecko eclt eco- ecol ecot ecrc ecrl ecrr ect- ectc ecto eeee eeke eele eeoc eerc eero eetc eete ekco ekeb ekek eker eket el-b elbe elbo elcb elce elco elec elee elek eleo eler elet elke elko elle ello elok elro elte elto eole eolo eore eorl eotc eoto erbb erbe ercc erce ereb erec erel erer eret erke erle erll erob eroc eroe erol eroo errc erre erro ertl etbc etbr etcc etco etec etee etel eter etoe etok etre etro ette etto k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbbt kbcb kbce kbck kbcl kbco kbcr kbct kbeb kbec kbee kbek kbel kbeo kber kbet kbkb kbkk kbkl kbko kbkr kblb kble kbll kblo kblr kblt kbob kboc kboe kbok kboo kbot kbrb kbrc kbre kbrk kbrl kbro kbrt kbtb kbtc kbte kbtk kbtl kbto kbtr kbtt kcbc kcbk kcbl kcbr kccb kccc kcck kccl kccr kcct kceb kcec kcee kcel kceo kcet kckc kckk kckl kcko kckr kclc kcle kclk kcll kclr kclt kcob kcoe kcol kcor kcot kcrc kcro kcrr kcrt kctb kctc kcte kcto kebb kebc kebe kebr kebt keck keco kecr keek keel keer keet kekb kekc keke kekl keko kele kelk