-hou bbbb bbch bbfc bbfn bcbc bccc bcfc bcnu bcof bcuc bhcc bhff bhuu bnoc bobb bobo bobu boch boco bocu boff bofh bofu bohn boho bohu bonc bonn bono bonu boob booc boof booh boon bouf bouh boun bubb bubo bubu bucc buch buco bucu bufc buff bufo buho bunb bunn buno bunu buon c-bo cbbc cbcc cbcn cbcu cbfb cbfc ccbc ccbn cccb cccc cccf cccu ccfc ccff ccnb ccnc ccnf ccnu ccob ccoc ccuc cfbc cfbn cfcb cfcf cfcn cfco cffb cfnb cfun chch chfc chnb chnc chno choc choh chon choo chou chub chun cnbc cnco cnoh cobb cobh cobo cobu coch coco cocu cofc coff cohn coho con- conc conf conn cono coob coof cooh coon coub coun cub- cubb cucc cucn cufc cuff cufo cuno cuon fccf fcch ffcc ffff ffun fnuf foch foco fofo fohn fono foof foon foun fubb fubu fuc- fufc fuff fufu funf funh hbfc hboc hcbc hccb hccc hcch hcfc hhhh hhof hobo hoch hocn hoff hofu hohn hoho hono honu hoof hoon houf hubb hubo huch hucu hufc huff hufu huhn huhu hunc hunh huon huub nbbc nbbo nbcc nbco nbfc nbuf ncbc nccc nccf nccn nccu ncfc nchc ncnc ncoc nfcu nfff nfon nhcc nhnn nhon nnnn nobc nobo nobu noch noco nohn noho non- nonn nono nonu noo- noob noon nooo nouh noun nubc nuch nucu nuff nunc nunn nuno nuoc nuon obbo obon obuh ocbc occc occn ocon off- offc offh offo offu ofno ohcc ohho ohno ohob ohoh onc- oncf onco onno onon ooff ooho oooh oooo oucc ouch oufc ouff oun- ouu- ubbo uboc ubon ucbc ucfb ucho ucon ufcu uhno uhoh uhuh uncc uncf unch unco unno unon uocc uofo uuno uuoc uuuu