bbbb bbch bbdd bbeb bbrc bcbc bccc bcde bcec bcer bchd bche bd-r bdbc bddc bddh bebb bebe bech beck bede beeb beed beek beer behr beke berc berd bere berk berr bhcc bher brcb brce breb brec bred bree brek brer brkb brrr c-cd cbbc cbcc cbce cbcr cbdb cbdc cbec cbee cber cbkr cbrd cbre cbrh ccbc cccb cccc ccdc ccdh ccdr cced ccee cche cchr ccrc ccre cd-e cd-r cddb cddr cdec cder cdre cec- cece cedd cede ceeb ceec ceke cer- cerc cerd cere chce chch cheb chec ched chee cheh chek cher chkb chrb chrc chrd chrr ckbc ckbe ckch ckck cker ckrc ckrd crbc crcc crce crcr crdc cre- creb crec cred cree creh crkc dbcc dcbc dccb dccc dcdb dche dcrk dddd ddrc ddre debe dec- decc decd dece deck dedd dede deeb deed deek deer dek- deke dekh der- derb derc dere derk derr dhec dhed dhee dher dkdc drbc dred dree dreh drek ebbc ebbr ebcc ebed eber ecbc ecbe eccb eccc ecce ecdc eced eche ecrc ecrr eddc edde ede- edeh eder eede eeee eeke eerc ehcc ehdd eheh eher ehre ekch ekeb eked ekek eker erbb erbe ercc erce erch erde ereb erec ered erer erhc erke errc erre hbcd hcbc hccb hccc hcch hcdr hcrd hdbk hebb hebe hebr hech heck hedd hede heeb heed heek heer hehe heke herb herc herd here herk herr hhhh hkcc hrdc hree hrrc kbbb kbbc kbbd kbbe kbbk kbbr kbcb kbce kbch kbck kbcr kbdb kbde kbdr kbeb kbec kbed kbee kbeh kbek kber kbhb kbhc kbhe kbhh kbhr kbkb kbkk kbkr kbrb kbrc kbrd kbre kbrh kbrk kcbc kcbd kcbk kcbr kccb kccc kccd kcck kccr kcdc kcdd kcdr kceb kcec kced kcee kche kchh kchk kchr kckc kckk kckr kcrc kcrh kcrr kdbb kdbr kdcc kdcd kdce kdcr kddb kddc kddd kddk kddr kdeb kdec kdkb kdkd kdkk kdkr kdrb kebb kebc kebe kebr kech keck kecr kedb kedc kedd kede kedr keed keeh keek keer kehk kehr kekb kekc keke ker- kerb kerc kere kerk kerr khbc khbd khbr khcb khcc khch khck khdc khdk khdr kheb khec khed kher khhk khke khkk khkr khrd khrk khrr kkbb kkbd kkbe kkbr kkcb kkcd kkch kkck kkcr kkdc kkdd kked kkhb kkhh kkhk kkhr kkkk kkrb kkrc kkre kkrh kkrk kkrr krbb krbd krbe krbk krbr krcb krcc krcd krce krch krdc krdd krde krdr kreb krec kred kree kreh krek krhc krkc krkd krke krkh krkk krkr krrb krrc krre krrk krrr rbbb rbbr rcbc rccb rccc rcdc rcde rchb rcrd rder rebb rebe rebk recc recd rece rech reck recr redc redd rede redh redr reeb reed reek rehb rehe reke rerd rere rhce rheb rhee rred rrrr