-ene bbbb bbeb bcbc bccc bcec bebb bebe beck beeb beek been beke bene benk benn cbbc cbcc cbce cbcn cbec cbee cbkn ccbc ccbn cccb cccc ccee ccnb ccnc ccne cec- cece ceeb ceec ceke cen- cene ckbc ckbe ckck cken cknb cknc cnbc ebbc ebcc eben ecbc ecbe eccb eccc ecce ecne eeee eeke ekeb ekek eken ekne enb- enbn ence enee enke ennc enne kbbb kbbc kbbe kbbk kbcb kbce kbck kbeb kbec kbee kbek kben kbkb kbkk kbnn kcbc kcbk kccb kccc kcck kceb kcec kcee kckc kckk kckn kcnb kebb kebc kebe kebn keck keek keen kekb kekc keke ken- kene kenk kenn kkbb kkbe kkbn kkcb kkck kkcn kken kkkk kknb kkne kknn knbb knbc knbe knbn kncb knce knck kncn kneb knec knee knek knen knkk knnb knnk nbbc nbcc ncbc nccc nccn ncec ncee ncen ncnc nebb nebe nebn necc nece neck neeb neen neke nene nnnn