c-- ccc ccf ccg ccn cco cfc cff cfg cfn cfo cgc cgg cgn cgo cn- cnc cnf cng cnn cno co- coc cof cog con coo fcc fcf fcg fcn fco ffc fff ffg ffn ffo fgc fgf fgg fgn fnc fnf fng fnn foc fof fog fon foo gcc gcf gcg gcn gco gfc gff gfo ggc ggg ggn ggo gnc gnf gnn gno goc gof gog gon goo ncc ncf ncg ncn nco nfc nff nfn nfo ngc ngf ngg ngn ngo nnc nnf nng nnn nno no- noc nof nog non noo oc- occ ocf ocg ocn oco of- ofc off ofg ofn ofo ogc ogf ogg ogn ogo on- onc onf ong onn ono oo- ooc oof oog oon ooo