bbbb bbdd bbeb bblb bcbc bccc bccl bcde bcec bdbc bddc bdle bebb bebe beck bede bedl beeb beed beek beel beke beld bele belk bell bldc bleb bled blee blek blkb blkd c-cd cbbc cbcc cbce cbcl cbdb cbdc cbec cbee cbkl cblb cblc ccbc cccb cccc cccl ccdc cced ccee ccel cclc cd-e cddb cddl cdec cec- cece cedd cede ceeb ceec ceel ceke cel- celc cele cell ckbc ckbe ckck ckcl clcd cldc clec cled clee clek dbcc dcbc dccb dccc dccl dcdb dddd ddlc debe dec- decc decd dece deck decl dedd dede deeb deed deek deel dek- deke deld dele delk dell dkdc dlbd e-cl ebbc ebcc ebed ebel ecbc ecbe eccb eccc ecce eccl ecdc ecdl eced eddc edde ede- edel edle eede eeee eeke eele ekeb eked ekek el-b elbe elcb elce elde elec eled elee elek elke elle kbbb kbbc kbbd kbbe kbbk kbbl kbcb kbce kbck kbcl kbdb kbde kbdl kbeb kbec kbed kbee kbek kbel kbkb kbkk kbkl kblb kbld kble kbll kcbc kcbd kcbk kcbl kccb kccc kccd kcck kccl kcdc kcdd kceb kcec kced kcee kcel kckc kckk kckl kclc kcle kclk kcll kdbb kdbl kdcc kdcd kdce kddb kddc kddd kddk kddl kdeb kdec kdel kdkb kdkd kdkk kdlb kdlc kdld kdll kebb kebc kebe keck kedb kedc kedd kede keed keek keel kekb kekc keke kekl keld kele kelk kell kkbb kkbd kkbe kkbl kkcb kkcd kkck kkcl kkdc kkdd kkdl kked kkkk kklb kklc kkld kkll klbb klbc klbd klbe klbl klcb klcc klcd klce klck klcl kldc kldd klde kleb klec kled klee klek klkc klkk klkl kllb kllc klle kllk lbcc lcbc lccc lcce lcdd lebd lece leck lede leed leek leel leke lekk lele lell llcc lldb lldc lllc llll