a-be aaaa aaab aaad aaae aaar aaba aabb aabd aada aade aaea aara aard aare abaa abab abad abae abar abb- abba abbb abbe abbr abda abed abee aber abra adaa adab adad adae adar adba adda addd adde addr adea adeb adee adeq ader adq- adra adre aede aeer aer- aera aerd aqar aqda aqra arab arad arae araq arar arba arbe arda arde area ared aree arq- arqa arr- arra arre arrr baaa baad baar baba babb babe babr bada badb badd bade badr baed baer baqa bar- bara barb bard bare barq barr bbad bbbb bbbq bbdd bbeb bd-r bead bear beba bebb bebe beda bede beeb beed beer beqa bera berd bere berr brab brad brae brda brea breb bred bree brer brrr daab daad daae daar daba dabb dada dade daeb daer dara darb dard dare darr dbar dddd ddre dead deae dear deba debe deda dedd dede deeb deed deer der- dera derb dere derr dqdb dqed draa drab drad drar drba drda drea dred dree drra eaba eada eadb eadd eara earb eard eare ebba ebbr ebed eber edad edar edda edde ede- edea eder edra eede eeea eeee eera eqed erad erba erbb erbe erda erde ereb ered erer erra erre q-be qada qadr qara qare qere qerq qqqq raab raad raba rabb rabe rada radd rade radr raed raer rara rarb rare rbbb rbbr rder rea- read reae rear reba rebb rebe reda redd rede redq redr reeb reed reqa reqd rera rerd rere rqda rrad rred rrrr