a-be a-ii aaaa aaab aaad aaae aaai aaap aaba aabb aabd aabi aabp aada aade aadi aaea aaep aaib aaii aapa aapi abaa abab abad abae abai abap abb- abba abbb abbe abbi abda abdi abed abee abia abib abid abie abpa abpd abpi abpp adaa adab adad adae adai adap adba adbi adda addd adde addi adea adeb adee adia adib adie adip adp- aeap aebi aede aiai aiba aida aidb aide aidi aiea aiee aiia aiib aiid aipa aipe aipi apai apap apba apda apdd apea aped apep api- apia apid apie apip appa appd ba-i baaa baad baba babb babe babi bada badb badd bade badi baed baia baib baid baie bapa bape bapi bapp bbad bbbb bbdd bbeb bdii bead beap beba bebb bebe bebi beda bede bedi beeb beed beep beia biad biap biba bibb bibe bibi bida bide bidi bieb bied bipa bipp bpai bpda bpea daab daad daae daap daba dabb dabp dada dade dadi daeb daia daid daie dapa dape dapi dapp dbpd dddd ddie dead deae deap deba debe debi deda dedd dede dedi deeb deed deep deid deie deip depa depe depp dia- diab diad diap diba dibb dibe dibp dida dide didi diea dieb died diep diii dipa dipe dipp dpaa dpie dppa eaba eada eadb eadd eadi eadp eapp ebba ebed ebid edad edda edde eddi eddp ede- edea edei edia edie edip eede eeea eeee eid- eide eidi eied eiei epaa epad epee epi- epia epid epie epip eppa eppp i-be iaaa iaai iaap iaba iadb iaea iaep iaia iapa iapp ibad ibea ibed ibia ibid ibie idad idae idbe idda idea ided idee idia idid idie ieie iepa iida iide iied iiie iiii iipa ipad ipba ipdi ipea ipid ipie ippa paap paba pada padd pade padi paea paep paia paib paid paie paip papa papb pape papi papp pbed pbpa pdea pdpa peab peai peap peba ped- peda pede pedi peed peep peia peip pepa pepd pepe pepi piai pibb pibi pida pide piea pied piep piia piip pipa pipe pipi pipp ppad ppap ppib ppid ppie pppa pppd pppp