a-ak a-ha a-ok aaaa aaab aaah aaav aaba aabb aabh aaha aahk aaka aaoo aava abaa abab abak abb- abba abbb abbo abha abho aboa abob aboh abok aboo abov abva ahab ahah ahha ahoa ahok ahva akaa akah akao akha akka akko akok aoah aoba avab avao avva avvo baaa baah baak baba babb babo baha baho bak- baka bakh bako baoh bava bbbb bhao boab boak boba bobb bobo boha boho boka boko boob booh book bova bovo haab haak haba habo haha haho haka hakk hako hava hhaa hhhh hoba hobo hoha hoho hoka hoko hook hova hovk kaaa kaab kaak kaba kabb kabo kaha kaho kaka kakh kakk kako kaoa kaok kava kavb kavh kavo kavv kbaa kbab kbak kbba kbbb kbbk kbbo kbhb kbhh kbkb kbkk kbko kbkv kboa kbob kbok kboo kbov kbva kbvb kbvo khab khak khao khav khhk khho khka khkk khkv khoa khob khok khvh kkaa kkba kkbb kkbo kkha kkhb kkhh kkhk kkkk kkoa kkob kkoh kkoo kkov kkvv koab koak koba kobb kobk kobo koha kohh koho koka kokb kokh kokk koko koob kook kooo koov kova kovk kovo kvab kvah kvak kvoa kvob kvoh kvok kvoo kvov kvvv obak obba obbo obkb obok ohba ohho ohob ohoh ohok okak okha okka okko okok ooaa ooak ooba ooha ooho oooh oooo ovo- ovoo vaho vaka vava vhhh voho voka vovk vvob vvvv