bbbb bbch bbdd bbeb bbrc bcbc bccc bcde bcec bcer bchd bche bd-r bdbc bddc bddh bebb bebe bech bede beeb beed beer behr berc berd bere berr bhcc bher brcb brce breb brec bred bree brer brrr c-cd cbbc cbcc cbce cbcr cbdb cbdc cbec cbee cber 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 cer- cerc cerd cere chce chch cheb chec ched chee cheh cher chrb chrc chrd chrr crbc crcc crce crcr crdc cre- creb crec cred cree creh dbcc dcbc dccb dccc dcdb dche dddd ddrc ddre debe dec- decc decd dece dedd dede deeb deed deer der- derb derc dere derr dhec dhed dhee dher drbc dred dree dreh ebbc ebbr ebcc ebed eber ecbc ecbe eccb eccc ecce ecdc eced eche ecrc ecrr eddc edde ede- edeh eder eede eeee eerc ehcc ehdd eheh eher ehre erbb erbe ercc erce erch erde ereb erec ered erer erhc errc erre hbcd hcbc hccb hccc hcch hcdr hcrd hebb hebe hebr hech hedd hede heeb heed heer hehe herb herc herd here herr hhhh hrdc hree hrrc rbbb rbbr rcbc rccb rccc rcdc rcde rchb rcrd rder rebb rebe recc recd rece rech recr redc redd rede redh redr reeb reed rehb rehe rerd rere rhce rheb rhee rred rrrr