-ana aaaa aaab aaan aaav aaba aabb aana aaon aaoo aava abaa abab aban abb- abba abbb abbo aboa abob abon aboo abov abva abza ana- anaa anab anan anao anaz anba anbb anbo anna annb anno ano- anoa anon anza aoba aonb aono avab avan avao avaz avon avva avvo aza- azab azan azaz azna azo- azon azoo azov azza azzo baaa baan baaz baba babb babo bana bann bano banz baon bava baza bazo bbbb boab boan boaz boba bobb bobo bona bonn bono boob boon booz bova bovo boza bozo bzzz naaa naab naan naba nabo nan- nana nanb nann nano nava navo navv naza nazo nazz nbaa nbbo nnnn noaa noba nobo non- nona nonn nono noo- noob noon nooo noov nov- nova novo oban obba obbo obon onab onan onna onno onon onoz onza onzo ooaa ooba oona oooo ovan ovo- ovon ovoo ozan ozna ozon vaan vana vann vano vava vaza vnav vona vonn vvob vvvv zaan zaav zaba zabo zana zann zano zaza zoan zobo zon- zona zoo- zoon zoza zozo zvab zvon zzzz