-ol bbb bbc bbk bbl bbn bbo bbr bcb bcc bck bcl bcn bco bcr bkb bkc bkk bkl bkn bko bkr blb blc blk bll bln blo blr bnb bnc bnk bnl bnn bno bnr bob boc bok bol bon boo bor brb brk brl brn bro brr c-- cbb cbc cbk cbl cbn cbo cbr ccb ccc cck ccl ccn cco ccr ckb ckc cko cl- clb clc clk cll cln clo clr cn- cnb cnc cnl cnn cno cnr co- cob coc cok col con coo cor crb crc crk crl crn cro crr kbb kbc kbk kbl kbn kbo kbr kcb kcc kck kcl kcn kcr kkb kkc kkk kkl kkn kkr kl- klb klc klo klr kn- knc knk knl knn kno knr kob koc kok kol kon koo kor krc krk krl krn kro krr lbb lbc lbk lbl lbo lbr lcb lcc lck lcl lcn lco lcr lkb lkl lkr llb llc llk lll lln llo llr lnb lnc lnk lnl lnn lno lnr lob loc lok lol lon loo lor lrb lrc lrk lrn lro lrr nbb nbc nbk nbl nbn nbo nbr ncb ncc nck ncl ncn nco ncr nkc nkk nkn nko nkr nlb nlc nlk nll nln nlo nlr nnb nnc nnk nnl nnn nno no- nob noc nok nol non noo nor nrb nrc nrk nrl nrn nro nrr ob- obb obc obk obl obn obo obr oc- ocb occ ock ocl ocn oco ocr okb okc okk okl oko okr olb olc olk oll oln olo on- onb onc onk onl onn ono onr oo- oob ooc ook ool oon ooo oor or- orb orc ork orl orn oro orr rbb rbc rbk rbl rbn rbo rbr rcb rcc rcl rcn rco rcr rkb rkc rkk rko rlc rll rln rlo rlr rnb rnc rnn rno rnr rob roc rok rol ron roo ror rrb rrc rrk rrl rrn rrr

bbbb bblb bbrc bcbc bccc bccl bcor blkb blno blob bloc blok blon bloo blrc bnoc bnor bnrr bobb bobo bock boco bokn boko bolk boll boln bolo bonc bonk bonn bono boob booc book bool boon boor bor- bork born boro borr brcb brkb brno brob broc brok brol bron broo bror brrr c-bo cbbc cbcc cbcl cbcn cbcr cbkl cbkn cbko cbkr cblb cblc cbln cbol cbrl cbrn ccbc ccbn cccb cccc cccl cclc ccnb ccnc ccnr ccob ccoc ccrc ccrl ckbc ckck ckcl ckco ckln cknb cknc ckob ckoc ckoo ckor ckrc clob clok clon cloo clor clro cnbc cnbl cnco cnrc cnrr cobb cobo cock coco cok- coko col- colb colk coll coln colo con- conc conk conn cono coob cook cool coon cor- corb corc cork corl corn coro corr crbc crcc crcr crkc crkl crob croc crok crol cron croo cror k-lo kbbb kbbc kbbk kbbl kbbo kbbr kbcb kbck kbcl kbco kbcr kbkb kbkk kbkl kbko kbkr kblb kbll kblo kblr kbnl kbnn kbno kbnr kbob kboc kbok kbon kboo kbrb kbrc kbrk kbrl kbrn kbro kcbc kcbk kcbl kcbr kccb kccc kcck kccl kccr kckc kckk kckl kckn kcko kckr kclc kclk kcll kcln kclr kcnb kcno kcnr kcob kcol kcon kcor kcrc kcrn kcro kcrr kkbb kkbl kkbn kkbo kkbr kkcb kkck kkcl kkcn kkco kkcr kkkk kklb kklc kkll kkln kklo kknb kknn kkno kkob kkol kkon kkoo kkor kkrb kkrc kkrk kkrl kkrn kkro kkrr klbb klbc klbl klbn klcb klcc klck klcl klcn klcr klkc klkk klkl klkn klko klkr kllb kllc kllk klnc klnn klno klob kloc klok klol klon kloo klor klrc klrk klrn klrr knbb knbc knbn knbr kncb knck kncn knco kncr knkk knlb knlc knlr knnb knnk knnr knob knoc knok knol knon knor knrb knrk knro kobb kobc kobk kobn kobo kobr kocb kock kocn kokb kokc kokk kokn koko kokr kolb kolc kolk koll koln kolo kolr konc konk kono koob kooc kook kool koon kooo koor korb korc kork korl korn koro korr krbb krbk krbl krbr krcb krcc krcl krcn krco krkc krkk krkn krko krkr krlc krln krnb krnk krnn krno krob kroc krok krol kroo kror krrb krrc krrk krrl krrn krro krrr lbcc lblr lcbc lccc lcor lcrl llcc lllc llll lloc lloo lncr lnnk lob- lobb lobo locc lock locn loco lokk loko loll lolo lonk lono lonr loob looc look lool loon loor lork lorn loro lroc lron lrrc lrrr nbbc nbbo nbcc nbco ncbc nccc nccn nccr nclc ncln nclr ncnc ncoc ncor ncrc nkok nkor nlcc nlrb nnnn nobc nobo nock nocl noco noko noll nolo non- nonn nono noo- noob nook nool noon nooo noor nor- norb norc nork norn noro norr nrlb nroc nron nrrc nrrl obbo obkb obok obol obon obor obro ocbc occc occn oclc ocon ocrl ocro ocrr okko oklo okno okok okol okon okor okro olbo olcc ollo olon olor onc- onco onno onon onor oocr oolo oooo orbb orbo orco orko orlo ornc orno oro- orok oron oror orro rbbb rbbr rbcl rcbc rcbo rccb rccc rcnl rcnr rcon rnbr rnco rob- robb robo rocc rock roco rokk roko rokr rolk roll rolo ronc ronk rono roob rook rool roon roor rorc rork roro rrrr

-lock b-r-k bbook bcock bkorn block blonk blook bloor blorb bo-bo bobko boboc bobok bobr bocon bocor bokko bokok bokor bolko boll- bollo bolno bolok bolon bonon boock booco booko boonk boorn borbo borck borko born- borno boro- borok boron boroo borro brcko brobo brock broll brolo bronc bronk bronn brook brool broon brrrr c-cor ccccc ccrcl clock clonk cloob clook cloor cnnnn co-bo co-co cobol cocc- cocco cocol cocon cokk- coll- collo colo- colok colon color conck concl conco concr cono- conob conon conor coolo corbo corno coro- corol coron corrl crock croco croll cronk crook crool croon k-rob kbool klock klonk knock knokk knoll knork knorr ko-ko kobol kocon kokko kokor kollo kolno kolob kolol konno konro koorn korbo korck korno korol koron koror korro