a-ak a-ok aaaa aaab aaba aabb aabt aaka aaoo aata aatk aatt abaa abab abaj abak abat abb- abba abbb abbo abbt aboa abob abok aboo abot abta ajab ajak ajao ajat ajba ajka ajob ajoo ajot akaa akao akka akko akok akot aoba at-t ataa atab atak atat atka atkt atob atok atot atta atto baaa baak baat baba babb babo baja bak- baka bako bakt bata bato batt bbbb bjoa boab boak boat boba bobb bobo bojo bojt boka boko boob book boot bota botb boto bott btaa btob bttb jaak jaba jabo jaja jaka jako jato jbaa jbob joab joao joba jobo jojo joka jokb jook joot jota joto jott kaaa kaab kaak kaat kaba kabb kabo kaja kajb kajk kajo kajt kaka kakj kakk kako kakt kaoa kaok kat- kata katb katk kato katt kbaa kbab kbak kbat kbba kbbb kbbk kbbo kbbt kbja kbjk kbjt kbkb kbkk kbko kboa kbob kbok kboo kbot kbta kbtb kbtk kbto kbtt kjaa kjak kjbb kjjj kjjk kjjo kjjt kjkj kjkk kjkt kjoj kjok kjot kjtt kkaa kkat kkba kkbb kkbj kkbo kkbt kkjb kkjk kkkj kkkk kkoa kkob kkoj kkoo kkot kktk koab koak koba kobb kobk kobo koja kojb kojo koka kokb kokk koko koob kook kooo koot kota kotb kotk koto kott ktaa ktak ktao ktat ktba ktbb ktbt ktjj ktkb ktkk ktko ktkt ktob ktok ktoo ktot kttk ktto kttt obak obba obbo obja obkb obok obot ojak ojok okak okja okka okko okok okot okta okto ooaa ooak ooba oooo ootb otak oto- otok otoo otta otto taa- taat taba tabb tabo tajo taka takk tako takt taoa tata tatb tato tatt tbta toab toat toba tobo tobt toja tojo toka toko tooa took toot tota toto tott ttab ttbb tttt