a-ha a-ii aaaa aaab aaac aaad aaah aaai aaba aabb aabc aabd aabh aabi aaca aacb aacc aacd aach aaci aada aadc aadi aaha aaib aaic aaii abaa abab abac abad abai abb- abba abbb abbi abca abcb abcc abcd abch abci abda abdi abha abhi abia abib abic abid acaa acab acac acad acai acba acca accc accd acch acci acda acdb acdc acdi acha achh achi aci- acia acic acid adaa adab adac adad adah adai adba adbc adbi adcc adci adda addc addd addi adha adhd adhi adia adib adic ahab ahac ahad ahah ahai ahdi ahha aiai aiba aica aicc aicd aich aida aidb aidc aidi aiha aiia aiib aiic aiid ba-i baaa baad baah baba babb babi bac- baca bacc bach baci bada badb badd badh badi baha bahi baia baib baic baid bbad bbbb bbch bbci bbdd bcaa bcbc bcca bccc bcci bcda bchd bcia bdbc bddc bddh bdii bhai bhca bhcc biad biba bibb bibi bica bicc bich bici bida bidi biha bihi c-cd caaa caab caac caah caba cabi cac- caca cacc cach caci cada cadc cadd cadi caha caia caib caic caid cbac cbbc cbca cbcc cbdb cbdc cbdi cbha cbia cbid ccaa ccab ccac ccad ccai ccba ccbc ccca cccb cccc ccci ccdc ccdh ccdi ccha ccic ccid ccii cdaa cdac cdad cdai cdba cdda cddb cdic cdii chaa chab chac chad chah chai chca chch chci chdi chha chia chib chic chid chih ciaa ciba cibc cibi cica cicc cich cici cida cidc cidi ciia ciid ciii daab daad daba dabb daca daci dada dadi daha dahi daia daid dbcc dcbc dcca dccb dccc dcci dcdb dcia dcii dddd dhaa dhad dhai dia- diab diac diad diba dibb dica dich dici dida didi diii h-ii haab haad haba habi hada hadh hadi haha haid hbcd hbic hcbc hcca hccb hccc hcch hchi hdca hdci hdda hhaa hhhh hi-c hiaa hiab hiba hibi hicc hich hida hidi hihc hihi iaaa iaac iaai iaba iaca iacc iadb iadc iahc iaia ibac ibad ibca ibia ibid icaa icab icac icad icai icbc icbd icca iccb iccc icci icdc icdd ichc ichd ichi idad idah idca idda idha idia idic idid ihab ihad ihba ihcc iiac iica iicd iida iiii