bbbb bbdd bbeb bcbc bccc bcde bcec bdbc bddc bebb bebe beck bede beeb beed beek beke c-cd cbbc cbcc cbce cbdb cbdc cbec cbee ccbc cccb cccc ccdc cced ccee cd-e cddb cdec cec- cece cedd cede ceeb ceec ceke ckbc ckbe ckck dbcc dcbc dccb dccc dcdb dddd debe dec- decc decd dece deck dedd dede deeb deed deek dek- deke dkdc ebbc ebcc ebed ecbc ecbe eccb eccc ecce ecdc eced eddc edde ede- eede eeee eeke ekeb eked ekek kbbb kbbc kbbd kbbe kbbk kbcb kbce kbck kbdb kbde kbeb kbec kbed kbee kbek kbkb kbkk kcbc kcbd kcbk kccb kccc kccd kcck kcdc kcdd kceb kcec kced kcee kckc kckk kdbb kdcc kdcd kdce kddb kddc kddd kddk kdeb kdec kdkb kdkd kdkk kebb kebc kebe keck kedb kedc kedd kede keed keek kekb kekc keke kkbb kkbd kkbe kkcb kkcd kkck kkdc kkdd kked kkkk