bbbb bbci bbdd bblb bcbc bccc bcci bccl bcuc bdbc bddc bdii bibb bibi bibl bicc bici bick bidi bidu biku bild bili bilk bill bilu blcu bldc blic blik blkb blkd blub blud bubb bubi bubu bucc buci buck bucu budb budd budi budl budu buic buid buik buiu buki bukk buku bulb buld buli bulk bull bulu c-cd cbbc cbcc cbcl cbcu cbdb cbdc cbdi cbid cbkl cblb cblc ccbc cccb cccc ccci cccl cccu ccdc ccdi ccic ccid ccii ccil cclc ccli ccuc cddb cddl cdic cdii cdli cibc cibi cicc cici cicu cidc cidi ciid ciii cili cilk cill ciuc ckbc ckbi ckck ckcl ckdu clcd cldc clib clic clii clik club clud cub- cubb cubi cucc cuci cuck cudi cui- cuil cuk- culb culc culd culk cull dbcc dcbc dccb dccc dcci dccl dccu dcdb dcii dcil dcli dddd ddlc ddub dibb dici dick didi didu diii diki diku dili dilk dill dkdc dkid dlbd dlib dlii dlil dub- dubb dubc dubu duck dudd dudu duid duil duki duku dulc duli dull dulu duul ibid icbc icbd iccb iccc icci iccl iccu icdc icdd icdl icll icub idic idid idil idku idli idub iicd iiii iiuc ikid ikki ilbc ilcd ilic ilki ilku ill- illd illi ilud iucc iuiu k-ci k-id kbbb kbbc kbbd kbbi kbbk kbbl kbbu kbcb kbci kbck kbcl kbcu kbdb kbdi kbdl kbib kbic kbid kbik kbil kbiu kbkb kbkk kbkl kblb kbld kbll kblu kbub kbuc kbud kbuk kbul kbuu kcbc kcbd kcbi kcbk kcbl kcbu kccb kccc kccd kcci kcck kccl kccu kcdc kcdd kcdi kcdu kcic kcid kcii kcil kciu kckc kckk kckl kclc kcli kclk kcll kclu kcub kcui kcuk kcul kdbb kdbi kdbl kdcc kdcd kddb kddc kddd kddi kddk kddl kdic kdil kdkb kdkd kdkk kdlb kdlc kdld kdll kdub kduc kibb kibc kibi kibl kibu kicb kicc kicd kick kicl kidb kidd kidi kidk kidl kidu kiic kiid kiii kiik kiiu kikc kikd kiki kikk kiku kilb kild kili kilk kill kiul kiuu kkbb kkbd kkbi kkbl kkcb kkcd kkci kkck kkcl kkdc kkdd kkdl kkic kkid kkik kkkk kklb kklc kkld kkli kkll kkuu klbb klbc klbd klbl klbu klcb klcc klcd klci klck klcl kldc kldd klib klic klid klik klil kliu klkc klkk klkl kllb kllc kllk klub kluk kluu kubb kubc kubd kubu kucb kucc kucd kuci kudd kudi kudl kudu kuic kuik kuil kuki kukk kukl kuku kulb kuld kuli kull kulu kuub kuuk kuul kuuu lbcc lcbc lccc lcdd ldci libc libu lick lidb lidl liii liku lilb lili lill lilu llcc lldb lldc lllc llll llud luci luck ludd ludi luik luki luli lull lulu luuk ubbi ubic ubid ubii ubik ubli ubud ucbc ucci ucdc ucdd ucil udbc uddi udic udid uduk ukcc ulbc ulcc ulic ulik ulli uluk ulul uulu uuuu