bbbb bbci bblb bcbc bccc bcci bccl bcuc bibb bibi bibl bicc bici bick biku bili bilk bill bilu blcu blic blik blkb blub bubb bubi bubu bucc buci buck bucu buic buik buiu buki bukk buku bulb buli bulk bull bulu cbbc cbcc cbcl cbcu cbkl cblb cblc ccbc cccb cccc ccci cccl cccu ccic ccii ccil cclc ccli ccuc cibc cibi cicc cici cicu ciii cili cilk cill ciuc ckbc ckbi ckck ckcl clib clic clii clik club cub- cubb cubi cucc cuci cuck cui- cuil cuk- culb culc culk cull icbc iccb iccc icci iccl iccu icll icub iiii iiuc ikki ilbc ilic ilki ilku ill- illi iucc iuiu k-ci kbbb kbbc kbbi kbbk kbbl kbbu kbcb kbci kbck kbcl kbcu kbib kbic kbik kbil kbiu kbkb kbkk kbkl kblb kbll kblu kbub kbuc kbuk kbul kbuu kcbc kcbi kcbk kcbl kcbu kccb kccc kcci kcck kccl kccu kcic kcii kcil kciu kckc kckk kckl kclc kcli kclk kcll kclu kcub kcui kcuk kcul kibb kibc kibi kibl kibu kicb kicc kick kicl kiic kiii kiik kiiu kikc kiki kikk kiku kilb kili kilk kill kiul kiuu kkbb kkbi kkbl kkcb kkci kkck kkcl kkic kkik kkkk kklb kklc kkli kkll kkuu klbb klbc klbl klbu klcb klcc klci klck klcl klib klic klik klil kliu klkc klkk klkl kllb kllc kllk klub kluk kluu kubb kubc kubu kucb kucc kuci kuic kuik kuil kuki kukk kukl kuku kulb kuli kull kulu kuub kuuk kuul kuuu lbcc lcbc lccc libc libu lick liii liku lilb lili lill lilu llcc lllc llll luci luck luik luki luli lull lulu luuk ubbi ubic ubii ubik ubli ucbc ucci ucil ukcc ulbc ulcc ulic ulik ulli uluk ulul uulu uuuu