a-ii aaaa aaab aaai aaba aabb aabi aabt aaib aaii aaoo aata aatt abaa abab abai abat abax abb- abba abbb abbi abbo abbt abia abib abit aboa abob aboo abot abox abta aiai aiba aibo aiia aiib aioi aita aiti aitt aixa aixi aoba at-t at-x ataa atab atai atat atax atia atit atob atoi atot atta atti atto axat axi- axia axo- axoa axto axxo ba-i ba-x baaa baat baba babb babi babo baia baib baio bait baix bata bati bato batt baxi baxt bbbb bbox biao biat biba bibb bibi bibo bio- bioi biot biox bita bito bitt bitx bixa bixi boab boai boat boba bobb bobi bobo boi- boii boit boob boot boox bota botb boti boto bott boxa btaa btob bttb iaaa iaai iaat iaba iaia iata iati ibat ibia ibot ibox ibtb iiii iiio iiit iioi iioo iita iitt ioba iobi ioii ioio ioit iooi iooo iota ioto itaa itai itat itia itoi itoo itta itto ixia ixxi obai obba obbo obia obit obix oboi obot obox oiba oiii oita oiti ooaa ooba oobi ooia oooo ootb otit oto- otoo otta otti otto oxa- oxi- oxia oxo- oxox oxxo taa- taat taba tabb tabi tabo taia taio tait taix taoa tata tatb tati tato tatt tax- taxa taxi taxo taxt tbit tbox tbta tiaa tiab tiao tiax tiba tibi tiit tita titi tito titt tixt toab toat toba tobi tobo tobt toit tooa toot tota toti toto tott tox- toxa toxi toxo toxt ttab ttbb tttt txaa txii xait xbai xbox xiao xibo xiii xita xito xixi xoxo xxii xxix xxxi xxxo xxxx