c-cd cccc cccf ccci ccdc ccdf ccdi ccfc ccfd ccff ccfi ccic ccid ccii ccoc ccod cdic cdii cdio cfcf cfco cfcy cicc cici cico cidc cidi ciff ciid ciii coco codd codi cody cofc coff cofi coif cood coof coyf coyo cyc- cycc cyfi cyy- cyyc dc-y dccc dcci dcfc dcii dcio dddd ddoc dfcc dfco dici dico dicy didi dido didy dif- diff dify diii dioc diyi doci doco dod- dodd dodi dodo dody doff doid dood doof doyo dycd dydd dyf- dyfi dyio dyo- dyoo fccf fcic fcii fdic fdoc ffcc ffff ffii ficc fico fidc fidf fido fifc fiff fifi fifo fiii foci foco fody fofo foid food foof fyfi iccc iccf icci icco icdc icdd icoc icod iddo idfc idic idid idio idoc ifcd ifco iffy ific ifid ifyo iicd iiii iiio iioi iioo ioci iod- iodd iodo iofc ioii ioio ioof iooi iooo occc occi odci oddd oddi oddy odic odio odoo off- offc offo offy ofid oici oido oiii oodi ooff oofy ooid oooo yccc yidi yiff yodo yoff yood yoof yoyo yyff yyyy