a-ak a-ha a-ok aaaa aaab aaah aaar aaav aaba aabb aabh aaha aahk aaka aaoo aara aaro aava abaa abab abak abar abb- abba abbb abbo abbr abha abho abhr aboa abob aboh abok aboo abor abov abra abro abva ahab ahah ahar ahha ahoa ahok ahor ahra ahrr ahva akaa akah akao akar akha akka akko akok akr- akra aoah aoba aora aorb arab arah arak arar arba arbh arh- arka arkh arko aroa arob aroo aror arr- arra arrh arrk arro arrr arva arvo avab avao avar avor avra avro avva avvo baaa baah baak baar baba babb babo babr baha baho bahr bak- baka bakh bako bakr baoh bar- bara barb barh bark baro barr bava bbbb bhao bhar bhor bhra boab boak boar boba bobb bobo boha boho bohr boka boko boob booh book boor bor- bora borh bork boro borr bova bovo brab brah brak brao brav brka brkb broa brob broh brok broo bror brrr haab haak haar haba habo haha haho haka hakk hako haor hara harh hark haro harr harv hava hbar hhaa hhhh hoar hoba hobo hoha hoho hoka hoko hook hoor hora hork horo horr hova hovk hrob hvar kaaa kaab kaak kaar kaba kabb kabo kabr kaha kaho kahr kaka kakh kakk kako kaoa kaok kaor kara karb kark karo karr karv kava kavb kavh kavo kavv kbaa kbab kbak kbar kbba kbbb kbbk kbbo kbbr kbhb kbhh kbhr kbkb kbkk kbko kbkr kbkv kboa kbob kbok kboo kbov kbra kbrb kbrh kbrk kbro kbrv kbva kbvb kbvo kbvr khab khak khao khar khav khbr khhk khho khka khkk khkr khkv khoa khob khok khor khra khrk khro khrr khrv khvh kkaa kkar kkba kkbb kkbo kkbr kkha kkhb kkhh kkhk kkhr kkkk kkoa kkob kkoh kkoo kkor kkov kkrb kkrh kkrk kkro kkrr kkrv kkvr kkvv koab koak koar koba kobb kobk kobo kobr koha kohh koho kohr koka kokb kokh kokk koko kokr koob kook kooo koor koov kora korb kork koro korr korv kova kovk kovo kovr krab krah krak krar krav krba krbb krbk krbr krhv krka krkh krkk krko krkr krkv kroa krob kroh krok kroo kror krov krrb krrk krro krrr krva krvb krvk krvo krvr krvv kvab kvah kvak kvar kvbr kvoa kvob kvoh kvok kvoo kvor kvov kvra kvrh kvro kvrr kvrv kvvr kvvv oara obak obba obbo obkb obok obor obra obrh obro ohba ohho ohob ohoh ohok ohra okak okha okka okko okok okor okra okro ooaa ooak ooba ooha ooho oooh oooo oora orab orah orak orao orar orav orba orbb orbo orka orko oro- orok oror orra orro orvr ovar ovo- ovoo ovra raab raak raba rabb rabk rabo raha rahr raka rakk raob raoh raok rara rarb rark raro rava rbbb rbbr rboh rhoa rhob rhoh roab roak roar rob- roba robb robo roha rohr roka rokh rokk roko rokr roob rook roor rora rork roro rova rovo rrah rrrr rvvh vaar vaho vaka vara vark varr vava vhhh vkor voar voho voka voor vor- vora voro vovk vrak vrav vrba vvob vvvv