a-be aaaa aaab aaad aaae aaap aaar aaba aabb aabd aabp aada aade aaea aaep aapa aara aard aare aarp abaa abab abad abae abap abar abb- abba abbb abbe abbr abda abed abee aber abpa abpd abpp abpr abra adaa adab adad adae adap adar adba adda addd adde addr adea adeb adee ader adp- adra adre aeap aede aeer aer- aera aerd apap apar apba apbr apda apdd apea aped apep aper appa appd appr apra apre arab arad arae arap arar arba arbe arda arde area ared aree arep arpa arpe arr- arra arre arrr baaa baad baar baba babb babe babr bada badb badd bade badr baed baer bapa bape bapp bar- bara barb bard bare barr bbad bbbb bbdd bbeb bbpr bd-r bead beap bear beba bebb bebe beda bede beeb beed beep beer bera berd bere berr bpda bpea bprd brab brad brae brda brea breb bred bree brep brer brrr daab daad daae daap daar daba dabb dabp dada dade daeb daer dapa dape dapp dara darb dard dare darp darr dbar dbpd dddd ddre dead deae deap dear deba debe deda dedd dede deeb deed deep deer depa depe depp depr der- dera derb dere derp derr dpaa dper dppa draa drab drad drap drar drba drda drea dred dree drra eaba eada eadb eadd eadp eapp eara earb eard eare earp ebba ebbr ebed eber edad edar edda edde eddp ede- edea eder edra eede eeea eeee eera epaa epad epee eper eppa eppp epra eprb eprp erad erap erba erbb erbe erda erde ereb ered erer erpa erpe erra erre paap paar paba pada padd pade paea paep paer papa papb pape papp papr par- para pard pare parp parr pbar pbed pbpa pdea pdpa pdpr peab peap pear peba ped- peda pede peed peep peer pepa pepd pepe per- pera perd pere perp perr ppad ppap ppar pper pppa pppd pppp prad prae prar pre- preb pred pree prep prpd prrd raab raad raba rabb rabe rada radd rade radr raed raep raer rapa rapd rape rapp rara rarb rare rbbb rbbr rdap rdbp rder rea- read reae reap rear reba rebb rebe reda redd rede redr reeb reed reep repe repp repr rera rerd rere rpdp rrad rred rrrr