a-ha aaaa aaab aaah aaar aaba aabb aabh aaha aaoo aara aaro abaa abab abaj abar abb- abba abbb abbo abbr abha abho abhr aboa abob aboh aboo abor abra abro ahab ahah ahar ahha ahja ahoa ahor ahra ahrr ajab ajah ajao ajar ajba ajob ajoo aoah aoba aora aorb arab arah arar arba arbh arh- arja arjo aroa arob aroo aror arr- arra arrh arro arrr baaa baah baar baba babb babo babr baha baho bahr baja baoh bar- bara barb barh baro barr bbbb bhao bhar bhor bhra bjoa boab boar boba bobb bobo boha boho bohr bojo boob booh boor bor- bora borh borj boro borr brab brah braj brao broa brob broh broo bror brrr haab haar haba habo haha haho haja hajj hajo haor hara harh haro harr hbar hhaa hhhh hoar hoba hobo hoha hoho hoja hojo hoor hora horo horr hrob j-ro jaar jaba jabo jabr jaha jahr jaja jara jaro jarr jbaa jbar jbob jhar jjar joab joah joao joar joba jobo joha joho jojo joor jora joro jrbr oara obba obbo obja obor obra obrh obro ohba ohho ohob ohoh ohra ojha ooaa ooba ooha ooho oooh oooo oora orab orah orao orar orba orbb orbo oro- oror orra orro raab raaj raba rabb rabo raha rahr raja rajo raob raoh rara rarb raro rbbb rbbr rboh rhoa rhob rhoh rhoj roab roar rob- roba robb robo roha rohr roja rojo roob roor rora roro rrah rrrr