bbbb bbch bbdd bbeb bcbc bccc bcde bcec bchd bche bdbc bddc bddh bebb bebe bech beck bede beeb beed beek beke bhcc c-cd cbbc cbcc cbce cbdb cbdc cbec cbee ccbc cccb cccc ccdc ccdh cced ccee cche cd-e cddb cdec cec- cece cedd cede ceeb ceec ceke chce chch cheb chec ched chee cheh chek chkb ckbc ckbe ckch ckck dbcc dcbc dccb dccc dcdb dche dddd debe dec- decc decd dece deck dedd dede deeb deed deek dek- deke dekh dhec dhed dhee dkdc ebbc ebcc ebed ecbc ecbe eccb eccc ecce ecdc eced eche eddc edde ede- edeh eede eeee eeke ehcc ehdd eheh ekch ekeb eked ekek hbcd hcbc hccb hccc hcch hdbk hebb hebe hech heck hedd hede heeb heed heek hehe heke hhhh hkcc kbbb kbbc kbbd kbbe kbbk kbcb kbce kbch kbck kbdb kbde kbeb kbec kbed kbee kbeh kbek kbhb kbhc kbhe kbhh kbkb kbkk kcbc kcbd kcbk kccb kccc kccd kcck kcdc kcdd kceb kcec kced kcee kche kchh kchk kckc kckk kdbb kdcc kdcd kdce kddb kddc kddd kddk kdeb kdec kdkb kdkd kdkk kebb kebc kebe kech keck kedb kedc kedd kede keed keeh keek kehk kekb kekc keke khbc khbd khcb khcc khch khck khdc khdk kheb khec khed khhk khke khkk kkbb kkbd kkbe kkcb kkcd kkch kkck kkdc kkdd kked kkhb kkhh kkhk kkkk