a-be a-ha aaaa aaab aaad aaae aaah aaap aaav aaba aabb aabd aabh aabp aada aade aaea aaep aaev aaha aapa aaph aava abaa abab abad abae abap abb- abba abbb abbe abda abed abee abha abpa abpd abpp abva abvd abvp adaa adab adad adae adah adap adba adda addd adde adea adeb adee adeh adha adhd adp- advb aeap aede aeva ahab ahad ahah ahed ahha ahva apah apap apba apda apdd apea aped apeh apep apev aph- apha appa appd apph avab avda avdp avea aveh avva baaa baad baah baba babb babe bada badb badd bade badh baed baha bapa bape bapp bava bave bbad bbbb bbdd bbeb bdav bddh bead beah beap beav beba bebb bebe beda bede beeb beed beep bpda bpea daab daad daae daap daba dabb dabp dada dade daeb daha dahe dahp dapa dape dapp dava dave dbpd dddd dead deae deap deba debe deda dedd dede deeb deed deep deev deha depa depe depp deva deve dhaa dhad dhap dhbp dhed dhee dpaa dphp dppa dpph dvda eaba eabh eada eadb eadd eadp eapp eave eavp ebba ebed edad edah edda edde eddp ede- edea edeh edve eede eeea eeee eeva ehaa ehav ehdd ehea eheh epaa epad epee eph- epha eppa eppp evae evah evap evdb evea haab haad haba habe hada hade hadh haed haha hapa hape happ hava have hdda head heah heap hebb hebe heda hedd hede hedp heeb heed heep hehe hepa hepe hepp heve hhaa hhhh hhpa hpae hpdh hppe paap paba pada padd pade paea paep paha pahp papa papb pape papp pava pave pbed pbpa pdea pdpa peab peah peap peba ped- peda pede peed peep peev peha pehe pepa pepd pepe phad phah phbv phe- phpa ppad ppap ppbv pppa pppd pppp pvda pvpa vaad vada vade vahe vahp vapa vapb vape vava vdbp veba veda vede veep vepe veve vhhh vvpb vvvv