a-ha aaaa aaab aaah aaas aaba aabb aabh aaha aahs aasa aass abaa abab abas abb- abba abbb abbs abha abhs abs- absa abss ahab ahah ahas ahha ahhs ahsa ahss asaa asab asah asas asba asha ashs assa assh asss baaa baah baas baba babb babs baha bahs basa bash bass bbas bbbb bbbs bbhs bhhs bsaa bsas bshs haab haas haba habs haha hahs hasa hash hass hbbs hbhs hbss hhaa hhhh hhhs hsas hshs saab saah saas saba sabb sabs saha sahs sasa sash sass sbaa sbas sbbs sbhs sbsa shab shah shas shbs shha shhh shhs ssaa ssab ssas sshs sssa sssb sssh ssss