a-ha aaaa aaab aaaf aaah aaba aabb aabh aabt aafa aafb aaff aaha aaoo aata aatf aatt abaa abab abaf abat abb- abba abbb abbo abbt abff abha abho aboa abob abof aboh aboo abot abta afaa afao afat affa affo afft afoa afoo afta ahab ahah ahat ahfa ahha ahoa ahot ahta ahto aoah aoba aotf at-t ataa atab atat atfb atha atho atob atof atot atta atto baaa baaf baah baat baba babb babo baff bafo baft baha baho baht baoh bata batf bath bato batt bbbb bfta bftt bhao bhat bhff bhot boab boat boba bobb bobo bofa boff bofh boha boho boht boob boof booh boot bota botb both boto bott btaa btaf btob bttb faaa faah faba fabo fafa faff fafo faha fata fatf fath fato fatt ffff fftf foaf foba fobt fofo foof foot fota foth foto fott haab haaf haat haba habo habt hafb haff haft haha haho haht hata hatb hath hato hatt hfba hhaa hhat hhhh hhof hoat hoba hobo hoff hoha hoho hoof hoot hota hotb hoth hoto hott htab htoh oafo oath obba obbo obot ofah off- offa offh offo ofta ohba ohho ohob ohoh ohta ohto ooaa ooba ooff ooha ooho oooh oooo ootb otha otho oto- otof otoh otoo otta otto taa- taaf taat taba tabb tabo tafa taff tafo taft taha taho taoa tata tatb tath tato tatt tbaf tbta tfot thaa thao that thof thoo thot thtb toab toat toba tobo tobt tofa toff tofo toft toho tooa toof tooh toot tota toth toto tott ttab ttbb ttfa ttff tttt