-ous bbbb bbbs bnss bobb bobo bobs bobu bonn bono bons bonu boob boon boos bosn boso boss bosu boun bous bsns bson bsos bubb bubo bubs bubu bunb bunn buno buns bunu buon buss busu buus nbbo nnnn nnos nnss nobo nobs nobu non- nonn nono nons nonu noo- noob noon nooo noos nos- noss nosu noun nous nsbo nsos nsou nssb nsso nsss nsub nubs nunn nuno nuns nuon nuss nusu obbo obon obos obsn obss obus onno onon onos onso onus oons oooo ooos oous osno osoo osos ossb osso ossu osun oubs oun- ouu- s-os sbbs sbus snns snob snoo snos snub snus sobo sobs sobu son- sono sons sonu soon soos soso soss soun sous ssbn ssns sssb ssss sub- subb subo subs sun- sunb sunn suno suns sunu suos sus- suso suss susu suus ubbo ubon ubos unno unns unon unos uns- unso unus usbs usno usnu usos ussb usss ussu usun usus uuno uuuu