-ana aaaa aaab aaaf aaan aaba aabb aabt aafa aafb aaff aana aaon aaoo aata aatf aatt abaa abab abaf aban abat abb- abba abbb abbo abbt abff aboa abob abof abon aboo abot abta afaa afan afao afat affa affo afft afoa afoo afta aftn ana- anaa anab anan anao anat anba anbb anbo anfa anfo anna annb anno annt ano- anoa anon ant- anta anto antt aoba aonb aono aont aotf at-t ataa atab atan atat atfb atna atno atob atof aton atot atta attn atto baaa baaf baan baat baba babb babo baff bafo baft bana bann bano bant baon bata batf batn bato batt bbbb bbfn bfta bftt bnta boab boan boat boba bobb bobo bofa boff bona bonn bono bont boob boof boon boot bota botb botn boto bott btaa btaf btan btob bttb faaa faan faba fabo fafa faff fafo fana fano fant faon fata fatf fato fatt ffff fftf fnta fntb foaf foan foba fobt fofo fono font foof foon foot fota foto fott ftan naaa naab naan naat naba nabf nabo nafa naff nafo nan- nana nanb nann nano nant naot nata nato natt nbaa nbaf nbbo nbfa nfaa nfat nfff nfon nfta nfto nnnn nnot nntn noaa noat noba nobo non- nona nonn nono nont noo- noob noon nooo noot not- nota noto nott ntof ntto oafo oban obba obbo obon obot ofan off- offa offo ofna ofno ofta onab onan onat onna onno onon ont- onto ooaa ooba ooff oona oont oooo ootb otan oto- otof oton otoo otta otto taa- taaf taan taat taba tabb tabo tafa taff tafo taft tana tann tano tant taoa tata tatb tato tatt tbaf tbnf tbta tfot toab toan toat toba tobo tobt tofa toff tofo toft tona tonb tonn tono tooa toof toon toot tota toto tott ttab ttbb ttfa ttff ttfn tton tttt