-ous bbbb bbbs bbdd bbdo bbox bdos bdsd bnss bobb bobo bobs bobu bodb bodo bods bodu bond bonn bono bons bonu boob bood boon boos boox bosn boso boss bosu boud boun bous bsbd bsnd bsns bsod bson bsos bssd bubb bubo bubs bubu budb budd budo buds budu bunb bund bunn buno buns bunu buon buss busu busx buus d-bo dbos dbss dbus dddd ddss ddub dnus do-x dobb dobs dobu dod- dodd dodo dods dond donn dono dons doob dood doon doos doso doss doub doud doun dous doux dsos dssn dub- dubb dubs dubu dudd dudo duds dudu dunn duno duns duo- duon duos dxbn dxds dxnd dxns dxnu dxss dxxx nbbo nddb nddo ndos ndss nndb nnnn nnos nnss nobo nobs nobu nodo nods nodu non- nonn nono nons nonu nonx noo- noob noon nooo noos nos- noss nosu noun nous nsbo nsds nsos nsou nssb nsso nsss nsub nubs nudd nudo nunn nuno nuns nuon nuss nusu nxdn obbo obon obos obox obsd obsn obss obus odbo oddd odds odnb odon odoo odos odou odso odus ondo onno onod onon onos onso onus oons oooo ooos oous osno osoo osos ossb ossd osso ossu osun oubs ouds oun- ound ousd ouu- oxo- oxon oxos oxox oxud oxus oxxo s-os sbbs sbds sbsd sbus sdds sdss sdsu snns snob snod snoo snos snsd snub snus sobo sobs sobu sodd sodo sods sodu son- sond sono sons sonu sood soon soos soso soss soud soun sous soxs ssbn ssdd ssns sssb ssss sub- subb subd subo subs sudd sudo suds sun- sunb sund sunn suno suns sunu suos sus- susd suso suss susu suus sux- ubbo ubod ubon ubos ubud udds udon udoo udos udox udsd udun unbd undo unds unno unns unon unos unox uns- unso unus usbs usdo usds usno usnu usos ussb usss ussu usun usus uuno uuuu uxus xbox xdos xoxo xson xsun xuxu xxxo xxxx