a-be a-ha aaaa aaab aaae aaah aaar aaba aabb aabh aaea aaha aara aare abaa abab abae abar abb- abba abbb abbe abbr abee aber abha abhr abra aeer aer- aera ahab ahah ahar ahha ahra ahre ahrr arab arae arah arar arba arbe arbh area aree areh arh- arr- arra arre arrh arrr baaa baah baar baba babb babe babr baer baha bahr bar- bara barb bare barh barr bbbb bbeb beah bear beba bebb bebe beeb beer behr bera bere berr bhar bher bhra brab brae brah brea breb bree brer brrr eaba eabh eara earb eare earh ebba ebbr eber eeea eeee eera ehaa ehea eheh eher ehre erba erbb erbe ereb erer erra erre haab haar haba habe haha hara hare harh harr hbar heah hear hebb hebe hebr heeb heer hehe hera herb here herr hhaa hhhh hree raab raba rabb rabe raer raha rahe rahr rara rarb rare rbbb rbbr rea- reae rear reba rebb rebe reeb reha rehb rehe rera rere rhae rhea rheb rhee rrah rrrr