bbbb bbdd bbdo bblb bcbc bccc bccl bctc bdbc bddc blbt bldc blkb blkd blob bloc blod blok bloo blot bobb bobo bock boco bodb bodo boko bold bolk boll bolo bolt boob booc bood book bool boot botb botd boto bott btcc btcl btdt btob bttb c-bo c-cd cbbc cbcc cbcl cbct cbdb cbdc cbdo cbkl cbko cblb cblc cbol cbot cbtc cbtl ccbc cccb cccc cccl ccdc cclc ccob ccoc ccod cctb cctc cctl cctt cddb cddl cdot ckbc ckck ckcl ckco ckdo ckob ckoc ckoo ckot cktb clcd cldc clob clod clok cloo clot cltb cltc cobb cobo cock coco coct codd codl cok- coko col- colb cold colk coll colo colt coob cood cook cool coot cotb cotc coto cott ctol ctot d-bo dbcc dbtt dcbc dccb dccc dccl dcct dcdb dctc dddd ddlc ddoc ddot dkdc dlbd dlco dobb dobl dock doco doct dod- dodd dodo doko dold dolk doll dolo dolt doob dood dook dool doot dotd dotk doto dott dtcc dtot k-lo kbbb kbbc kbbd kbbk kbbl kbbo kbbt kbcb kbck kbcl kbco kbct kbdb kbdl kbdo kbkb kbkk kbkl kbko kblb kbld kbll kblo kblt kbob kboc kbod kbok kboo kbot kbtb kbtc kbtk kbtl kbto kbtt kcbc kcbd kcbk kcbl kccb kccc kccd kcck kccl kcct kcdc kcdd kckc kckk kckl kcko kclc kclk kcll kclt kcob kcol kcot kctb kctc kcto kdbb kdbl kdcc kdcd kdco kddb kddc kddd kddk kddl kdkb kdkd kdkk kdko kdkt kdlb kdlc kdld kdll kdlo kdoc kdok kdot kdtd kkbb kkbd kkbl kkbo kkbt kkcb kkcd kkck kkcl kkco kkct kkdc kkdd kkdl kkdo kkdt kkkk kklb kklc kkld kkll kklo kkob kkol kkoo kkot kktc kktk kktl klbb klbc klbd klbl klbt klcb klcc klcd klck klcl kldc kldd klkc klkk klkl klko kllb kllc kllk klob kloc klok klol kloo kltc kltd kltk klto kltt kobb kobc kobk kobo kocb kocd kock koct kodk kodl kodo kodt kokb kokc kokk koko kolb kolc kold kolk koll kolo kolt koob kooc kook kool kooo koot kotb kotc kotd kotk koto kott ktbb ktbc ktbl ktbt ktcc ktck ktcl ktco ktdb ktdc ktdd ktdk ktdo ktkb ktkc ktkk ktko ktkt ktlb ktlk ktlo ktlt ktob ktoc ktok ktoo ktot kttc kttk ktto kttt lbcc lcbc lccc lcdd lctl lcto llcc lldb lldc lllc llll lloc llod lloo lob- lobb lobo locc lock loco lokk loko lold loll lolo loob looc lood look lool loot lotd lotl loto lott ltbl ltcc lttc obbo obdt obkb obok obol obot obtd ocbc occc occt oclc oct- octo odbo oddd odoo odot okko oklo okok okol okot okto olbo olcc oldb ollo olot oold oolo oooo ootb otbd otcd otcl oto- otok otoo otto tbcb tbcc tbcd tccc tcdd tctc tddb tkod tkol tlco tobo tobt tock toco todd todo todt toko tol- told tolk toll tolo tolt tood took tool toot totc totd toto tott ttbb tttt