bbbb bbdd bbeb bblb bcbc bccc bccl bcde bcec bcuc bdbc bddc bdle bebb bebe becu bede bedl bedu beeb beed beel beld bele bell belu beux blcu bldc bleb bled blee bleu blub blud blue bubb bube bubu bucc buce bucu budb budd bude budl budu buel bueu bulb buld bule bull bulu c-cd cbbc cbcc cbce cbcl cbcu cbdb cbdc cbec cbee cblb cblc cbux ccbc cccb cccc cccl cccu ccdc cced ccee ccel cclc cclx ccuc ccxl cd-e cddb cddl cdec cdex cdxl cebu cec- cece cedd cede cedu ceeb ceec ceel cel- celc cele cell ceux cexe clcd cldc clec cled clee cleu club clud clue clux clxx cub- cubb cube cucc cuce cude cued culb culc culd cule cull cxxx dbcc dcbc dccb dccc dccl dccu dcdb dcxl dcxx dddd ddlc ddub debe debu dec- decc decd dece decl dedd dede dedu deeb deed deel deld dele dell deue deul deux dex- dexe dlbd dlux dub- dubb dubc dube dubu duce dudd dude dudu duel dulc dule dull dulu duul dxbc dxbe dxbl dxcb dxcc dxcl dxdc dxec dxed dxel dxll dxue dxxl dxxx e-cl ebbc ebcc ebed ebel ebul ecbc ecbe eccb eccc ecce eccl ecdc ecdl eced eddc edde ede- edel edex edle educ edxl eede eedu eeee eele el-b elbe elbu elcb elce elde elec eled elee elex elle ellu elue elul eubc eucd eude eule excl exec exed exel exul lbcc lcbc lccc lcce lcdd le-u lebd lebu lece lede leed leel lele lell lelu leuc leud lexx llcc lldb lldc lleu lllc llll llud lube luce ludd lude lued lule lull lulu luxe lxde lxxx ubbe uble ubud ucbc ucdc ucdd ucel udbc udel uele uell ulbc ulcc ulde uleb ulee ulex ulle ulul uulu uuuu uxue uxul x-ed xbcd xbee xbel xcbl xcel xdcc xexe xldb xuld xuxu xxxx