-ene bbbb bbeb bcbc bccc bcec bcnu bcuc bebb bebe beck becu beeb beek been beke bene benk benn benu beuk bubb bube bubu bucc buce buck bucu buen bueu buke bukk buku bunb bune bunk bunn bunu cbbc cbcc cbce cbcn cbcu cbec cbee cbkn ccbc ccbn cccb cccc cccu ccee ccnb ccnc ccne ccnu ccuc cebu cec- cece ceeb ceec ceke cen- cene ckbc ckbe ckck cken cknb cknc cnbc cub- cubb cube cucc cuce cuck cucn cuek cuk- cuke cune ebbc ebcc eben ecbc ecbe eccb eccc ecce ecne eeee eeke ekeb ekek eken ekne enb- enbn ence enee enke ennc enne ennu enue eubc kbbb kbbc kbbe kbbk kbbu kbcb kbce kbck kbcu kbeb kbec kbee kbek kben kbkb kbkk kbnn kbnu kbub kbuc kbue kbuk kbun kbuu kcbc kcbk kcbu kccb kccc kcck kccu kceb kcec kcee kceu kckc kckk kckn kcnb kcub kcue kcuk kebb kebc kebe kebn kebu keck keek keen kekb kekc keke keku ken- kene kenk kenn kenu keun kkbb kkbe kkbn kkcb kkck kkcn kken kkkk kknb kkne kknn kknu kkuu knbb knbc knbe knbn knbu kncb knce knck kncn kncu kneb knec knee knek knen kneu knkk knnb knnk knub knue knuk kubb kubc kube kubu kucb kucc kuce kuek kuen kueu kuke kukk kukn kuku kunc kune kunk kunu kuub kuuk kuuu nbbc nbcc ncbc nccc nccn nccu ncec ncee ncen ncnc ncue ncuk nebb nebe nebn nebu necc nece neck neeb neen neke neku nene nenu neuc neue neuk neun neuu nnnn nubc nube nubk nuce nuck nucu nuee nuke nuku nunc nune nunk nunn nuuk ubbe ubek ucbc ukcc ukek ukeu uknc unbe uncc unce uneb unec unee unen unke unkn unne uuen uuuu