c-cd cccc cccf cccl ccdc ccdf ccfc ccfd ccff ccfl cclc ccoc ccod cctc cctl cctt cddl cdot cfcf cfcl cfco cftc cftl clcd cldc clod clof cloo clot cltc coco coct codd codl cofc coff coft col- cold coll colo colt cood coof cool coot cotc coto cott ctcf ctfc ctfo ctol ctot dccc dccl dcct dcfc dctc dddd ddlc ddoc ddot dfcc dfco dfdt dlco doco doct dod- dodd dodo doff dold dolf doll dolo dolt dood doof dool doot dotd doto dott dtcc dtfc dtot fccf fcot fcto fdoc fdot fdtc fdtl ffcc ffff fftf flcl floc flod floo flot foco fofo folc fold foll folo folt food foof fool foot foto fott ft-c ft-l ftcd ftfc lccc lcdd lcfc lctl lcto ldcf lfcc llcc lldc lllc llll lloc llod lloo locc loco loff loft lold loll lolo looc lood loof lool loot lotd lotl loto lott ltcc ltfc lttc occc occt oclc oct- octo oddd odoo odot ofcl off- offc offo olcc ollo olof olot ooff oold oolo oooo otcd otcl otfc oto- otof otoo otto tccc tcdd tcfc tctc tdff tfdc tfot tftc tlco toco todd todo todt toff tofo toft tol- told toll tolo tolt tood toof tool toot totc totd toto tott ttfc ttff tttt