cccc cccf ccfc ccff cchr ccoc ccrc ccrf cfcf cfco cffr cfor chch chfc chfr choc choh choo chor chrc chrf chro chrr coch coco cofc coff coho coof cooh cor- corc corf coro corr crcc crcr crfc croc croh croo cror fccf fcch ffcc ffff ffrr foch foco fofo fohr foof for- foro forr frcc frfc froh hccc hcch hcfc hhhh hhof hoch hocr hoff hoho hoof hoor horc horo horr hrfc hrrc occc ocro ocrr ofcr off- offc offh offo offr ofor ohcc ohho ohoh oocr ooff ooho oooh oooo orch orco orff oro- orof oror orro rccc rcfc rffc rhoc rhoh rocc roch roco rofc roff rofo rohr roof roor rorc roro rrfc rrrr