-ene bbbb bbch bbeb bbfc bbfn bcbc bccc bcec bcfc bche bcnu bcuc bebb bebe bech becu beeb beef been befe beff behn bene benn benu bhcc bhff bhuu bubb bube bubu bucc buce buch bucu buen bueu bufc bufe buff buhe bunb bune bunn bunu cbbc cbcc cbce cbcn cbcu cbec cbee cbef cbfb cbfc ccbc ccbn cccb cccc cccf cccu ccee ccfc ccff cche ccnb ccnc ccne ccnf ccnu ccuc cebu cec- cece ceeb ceec cef- cefc cefn cen- cene cfbc cfbn cfcb cfcf cfcn cffb cfnb cfun chce chch cheb chec chee chef cheh chen cheu chfc chnb chnc chub chun cnbc cub- cubb cube cucc cuce cucn cufc cuff cune ebbc ebcc eben ebfc ecbc ecbe eccb eccc ecce ecef ecfc eche ecne eeee eefe eefn efen ehcc eheh ehen eheu enb- enbn ence ench enee enfb ennc enne ennu enue enuf eubc euch eufc fccf fcch fece fech feeb feen fefc fefe feff fehu fene fenn ffcc ffee ffff ffun fnuf fubb fubu fuc- fufc fuff fufu fune funf funh hbfc hcbc hccb hccc hcch hcfc hebb hebe hech heeb heef hefe hehe hehn hene henh henn henu heue heun hfce hhhh hnce hubb hube huch hucu hufc hufe huff hufu huhn huhu hunc hune hunh huub nbbc nbcc nbfc nbuf ncbc nccc nccf nccn nccu ncec ncee ncef ncen ncfc ncfe nchc ncnc ncue nebb nebe nebn nebu necc nece nech neeb neef neen nefe neff nefh nehe nehu nene nenh nenu neuc neue neuf neun neuu nfcu nfff nhcc nheb nhnn nnnn nubc nube nuce nuch nucu nuee nuff nunc nune nunn ubbe ucbc ucfb uche ufcu uffe uhuh unbe uncc unce uncf unch uneb unec unee unef unen unne uuen uuuu