-ene -one bbbb bbdd bbdo bbeb bebb bebe bebo bede bedo beeb beed been bend bene benn beno beo- beod beon bobb bobe bobo bodb bode bodo boee boen boeo bond bone bonn bono boob bood booe boon d-bo dddd debe dedd dede dedo deeb deed deen dene denn deno deon dobb dobe dod- dodd dode dodo doen dond done donn dono doob dood doon ebbo ebed eben ebno eboe ebon eboo edde eddo ede- eden edno edod edon eede eeee eend enb- enbn end- ende endo ened enee eneo enne eno- enoe enon eode eone nbbo nddb ndde nddo nebb nebe nebn nebo nedd nede nedo neeb need neen nend nene neno neo- neod neon neoo nndb nnnn nobo node nodo noed non- none nonn nono noo- noob noon nooo o-eo obbo obed oben oboe obon odbo oddd oded oden odeo odnb odon odoo oedn oedo oen- oeno onde ondo one- oneb oned onee oneo onne onno onod onon oobe oone oooo