a-be a-ha a-ii aaaa aaab aaae aaah aaai aaba aabb aabh aabi aaea aaha aaib aaii abaa abab abae abai abb- abba abbb abbe abbi abee abha abhi abia abib abie aebi ahab ahah ahai ahha aiai aiba aiea aiee aiha aiia aiib ba-i baaa baah baba babb babe babi baha bahi baia baib baie bbbb bbeb beah beba bebb bebe bebi beeb beia bhai bhie biba bibb bibe bibi bieb biha bihe bihi eaba eabh ebba eeea eeee ehaa ehea eheh eiei eiha h-ii haab haba habe habi haha haie heah hebb hebe hebi heeb hehe heia heie heih hhaa hhhh hiaa hiab hiba hibi hiei hihe hihi hiie i-be iaaa iaai iaba iaea iaia ibea ibeh ibia ibie ieie ihab ihba iiie iiii