a-ha a-ii aaaa aaab aaac aaah aaai aaba aabb aabc aabh aabi aaca aacb aacc aach aaci aaha aaib aaic aaii abaa abab abac abai abb- abba abbb abbi abca abcb abcc abch abci abha abhi abia abib abic acaa acab acac acai acba acca accc acch acci acha achh achi aci- acia acic ahab ahac ahah ahai ahha aiai aiba aica aicc aich aiha aiia aiib aiic ba-i baaa baah baba babb babi bac- baca bacc bach baci baha bahi baia baib baic bbbb bbch bbci bcaa bcbc bcca bccc bcci bcia bhai bhca bhcc biba bibb bibi bica bicc bich bici biha bihi caaa caab caac caah caba cabi cac- caca cacc cach caci caha caia caib caic cbac cbbc cbca cbcc cbha cbia ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci ccha ccic ccii chaa chab chac chah chai chca chch chci chha chia chib chic chih ciaa ciba cibc cibi cica cicc cich cici ciia ciii h-ii haab haba habi haha hbic hcbc hcca hccb hccc hcch hchi hhaa hhhh hi-c hiaa hiab hiba hibi hicc hich hihc hihi iaaa iaac iaai iaba iaca iacc iahc iaia ibac ibca ibia icaa icab icac icai icbc icca iccb iccc icci ichc ichi ihab ihba ihcc iiac iica iiii