c-cd cccc cccf ccci ccdc ccdf ccdi ccfc ccfd ccff ccfi ccic ccid ccii ccoc ccod cctc cctt cdic cdii cdio cdot cfcf cfco cfit cftc cicc cici cico cict cidc cidi cidt ciff ciid ciii ciit citf citi cito citt coco coct codd codi cofc coff cofi coft coif coit cood coof coot cotc coti coto cott ctcf ctfc ctfo ctic ctot dccc dcci dcct dcfc dcii dcio dctc dddd ddoc ddot dfcc dfco dfdt dici dico dict didi dido dif- diff diii dioc diot diti dito ditt doci doco doct dod- dodd dodi dodo doff doid doit dood doof doot dotd doti doto dott dtcc dtfc dtot fccf fcic fcii fcot fcto fdic fdoc fdot fdtc fdti ffcc ffff ffii fftf ficc fico fict fidc fidf fido fifc fiff fifi fifo fift fiii fitc fiti fitt foci foco fofo foid food foof foot foti foto fott ft-c ftcd ftdi ftfc ftii iccc iccf icci icco icct icdc icdd icoc icod iddo idfc idic idid idio idoc ifcd ifco ific ifid ifit ifto iicd iiii iiio iiit iioi iioo iitt ioci iod- iodd iodo iofc ioii ioio ioit ioof iooi iooo iotf ioto itdo itic itif itof itoi itoo ittf itto occc occi occt oct- octi octo odci oddd oddi odic odio odoo odot off- offc offo ofid ofit oici oido oiii oitc oiti oodi ooff ooid oooo otcd otfc otic otif otit oto- otof otoo otti otto tccc tcdd tcfc tctc tdff tfdc tfot tftc ticc tico tidc tidd tiff tifo tift tiit titc titi tito titt toci toco todd todi todo todt toff tofi tofo toft toid toit tood toof toot totc totd toti toto tott ttfc ttff tttt