-ana aaaa aaab aaan aaba aabb aabt aana aaon aaoo aata aatt abaa abab aban abat abb- abba abbb abbo abbt aboa abob abon aboo abot abta abza ana- anaa anab anan anao anat anaz anba anbb anbo anna annb anno annt ano- anoa anon ant- anta anto antt antz anza aoba aonb aono aont at-t ataa atab atan atat atna atno atob aton atot atoz atta attn atto aza- azab azan azat azaz azna azo- azon azoo azot azza azzo baaa baan baat baaz baba babb babo bana bann bano bant banz baon bata batn bato batt batz baza bazo bbbb bnta boab boan boat boaz boba bobb bobo bona bonn bono bont boob boon boot booz bota botb botn boto bott boza bozo btaa btan btob bttb bzzt bzzz naaa naab naan naat naba nabo nan- nana nanb nann nano nant naot nata nato natt naza nazo nazz nbaa nbbo nnnn nnot nntn noaa noat noba nobo non- nona nonn nono nont noo- noob noon nooo noot not- nota noto nott ntoz ntto oban obba obbo obon obot onab onan onat onna onno onon onoz ont- onto onza onzo ooaa ooba oona oont oooo ootb otan oto- oton otoo otta otto ozan ozna ozon taa- taan taat taba tabb tabo tana tann tano tant tanz taoa tata tatb tato tatt tatz taza tazo tazz tbta toab toan toat toba tobo tobt tona tonb tonn tono tooa toon toot tota toto tott toza tozo ttab ttbb tton tttt tzzt zaan zaat zaba zabo zana zann zano zant zaza zoan zoat zobo zon- zona zoo- zoon zoot zota zott zotz zoza zozo ztoa zzzz