bbbb bbdd bbdo bblb bbrc bcbc bccc bccl bcor bcoz bd-r bdbc bddc bldc bldr blkb blkd blob bloc blod blok bloo blrc bobb bobo bock boco bodb bodo boko bold bolk boll bolo boob booc bood book bool boor booz bor- bord bork boro borr borz bozo brcb brdo brkb brob broc brod brok brol broo bror broz brrr bzrk bzzz c-bo c-cd cbbc cbcc cbcl cbcr cbdb cbdc cbdo cbkl cbko cbkr cblb cblc cbol cbrd cbrl ccbc cccb cccc cccl ccdc ccdr cclc ccob ccoc ccod ccrc ccrl cd-r cddb cddl cddr ckbc ckck ckcl ckco ckdo ckob ckoc ckoo ckor ckrc ckrd clcd cldc cldr clob clod clok cloo clor cloz clrd clro cobb cobo cock coco codd codl cok- coko col- colb cold colk coll colo coob cood cook cool cor- corb corc cord cork corl coro corr cozd cozz crbc crcc crcr crcz crdc crkc crkl crob croc crod crok crol croo cror croz d-bo dbcc dcbc dccb dccc dccl dcdb dcrk dddd ddlc ddoc ddrc dkdc dlbd dlco dobb dobl dock doco dod- dodd dodo doko dold dolk doll dolo dolz doob dood dook dool door dorc dord dork doro dorr dozo drbc drob drod drol droz dzbb dzlb dzlr dzok dzor dzrl dzrr k-lo kbbb kbbc kbbd kbbk kbbl kbbo kbbr kbbz kbcb kbck kbcl kbco kbcr kbcz kbdb kbdl kbdo kbdr kbdz kbkb kbkk kbkl kbko kbkr kbkz kblb kbld kbll kblo kblr kblz kbob kboc kbod kbok kboo kboz kbrb kbrc kbrd kbrk kbrl kbro kbrz kbzc kbzd kbzo kbzz kcbc kcbd kcbk kcbl kcbr kccb kccc kccd kcck kccl kccr kcdc kcdd kcdr kcdz kckc kckk kckl kcko kckr kckz kclc kclk kcll kclr kclz kcob kcol kcor kcoz kcrc kcro kcrr kcrz kczo kczz kdbb kdbl kdbr kdcc kdcd kdco kdcr kddb kddc kddd kddk kddl kddr kdkb kdkd kdkk kdko kdkr kdlb kdlc kdld kdll kdlo kdlr kdoc kdok kdrb kdrl kdro kdzr kdzz kkbb kkbd kkbl kkbo kkbr kkbz kkcb kkcd kkck kkcl kkco kkcr kkdc kkdd kkdl kkdo kkdz kkkk kklb kklc kkld kkll kklo kklz kkob kkol kkoo kkor kkoz kkrb kkrc kkrk kkrl kkro kkrr kkrz kkzz klbb klbc klbd klbl klcb klcc klcd klck klcl klcr klcz kldc kldd kldr kldz klkc klkk klkl klko klkr kllb kllc kllk klob kloc klok klol kloo klor kloz klrc klrd klrk klrr klrz klzk klzr klzz kobb kobc kobk kobo kobr kocb kocd kock kodk kodl kodo kodz kokb kokc kokk koko kokr kokz kolb kolc kold kolk koll kolo kolr kolz koob kooc kook kool kooo koor kooz korb korc kord kork korl koro korr kozb kozk kozo kozr krbb krbd krbk krbl krbr krbz krcb krcc krcd krcl krco krdc krdd krdo krdr krdz krkc krkd krkk krko krkr krkz krlc krld krob kroc krod krok krol kroo kror kroz krrb krrc krrk krrl krro krrr krrz krzk krzr krzz kzbb kzbd kzbk kzbl kzbr kzbz kzcd kzcl kzcr kzdc kzdr kzkr kzkz kzlb kzlk kzlz kzoo kzor kzoz kzrb kzrc kzrd kzrk kzro kzrr kzrz kzzb kzzd kzzk kzzo kzzr kzzz lbcc lblr lboz lcbc lccc lcdd lcdr lcor lcrd lcrl llcc lldb lldc lllc llll lloc llod lloo lob- lobb lobo locc lock loco lodz lokk loko lold loll lolo lolz loob looc lood look lool loor looz lord lork loro lrdd lroc lrrc lrrr obbo obkb obok obol obor obro ocbc occc oclc ocrl ocro ocrr odbo oddd odoo odor odrl okko oklo okok okol okor okro olbo olcc oldb ollo olor oocr oold oolo oooo oord orbb orbo orco ordo orko orlo oro- orok oror oroz orro orzk orzo ozd rbbb rbbr rbcl rcbc rcbo rccb rccc rcdc rcrd rdoc rob- robb robo rocc rock roco rodd rodo rokk roko rokr rold rolk roll rolo roob rood rook rool roor rooz rorc rork roro rozz rrrr z-ro zloc zobo zoco zodd zoll zolo zoo- zook zool zorb zorc zord zork zoro zozo zzzz