c-- ccc ccf ccn cco ccu cfc cff cfn cfo cfu cn- cnc cnf cnn cno cnu co- coc cof con coo cou cuc cuf cun cuo cuu fcc fcf fcn fco fcu ffc fff ffn ffo ffu fnc fnf fnn fnu foc fof fon foo fou fuf fun fuo fuu ncc ncf ncn nco ncu nfc nff nfn nfo nfu nnc nnf nnn nno nnu no- noc nof non noo nou nuc nun nuo nuu oc- occ ocf ocn oco ocu of- ofc off ofn ofo ofu on- onc onf onn ono onu oo- ooc oof oon ooo ou- ouc ouf oun ouo ucc ucf ucn uco ucu ufc uff ufn ufo ufu un- unc unf unn uno unu uoc uon uoo uuc uun uuu