-ene bbbb bbch bbeb bcbc bccc bcec bche bcnu bcuc bebb bebe bech becu beeb been behn bene benn benu bhcc bhuu bubb bube bubu bucc buce buch bucu buen bueu buhe bunb bune bunn bunu cbbc cbcc cbce cbcn cbcu cbec cbee ccbc ccbn cccb cccc cccu ccee cche ccnb ccnc ccne ccnu ccuc cebu cec- cece ceeb ceec cen- cene chce chch cheb chec chee cheh chen cheu chnb chnc chub chun cnbc cub- cubb cube cucc cuce cucn cune ebbc ebcc eben ecbc ecbe eccb eccc ecce eche ecne eeee ehcc eheh ehen eheu enb- enbn ence ench enee ennc enne ennu enue eubc euch hcbc hccb hccc hcch hebb hebe hech heeb hehe hehn hene henh henn henu heue heun hhhh hnce hubb hube huch hucu huhn huhu hunc hune hunh huub nbbc nbcc ncbc nccc nccn nccu ncec ncee ncen nchc ncnc ncue nebb nebe nebn nebu necc nece nech neeb neen nehe nehu nene nenh nenu neuc neue neun neuu nhcc nheb nhnn nnnn nubc nube nuce nuch nucu nuee nunc nune nunn ubbe ucbc uche uhuh unbe uncc unce unch uneb unec unee unen unne uuen uuuu