REF (C,4) REF (O,4) AND REF (C,3) REF (O,3) AND REF (C,2) REF (O,2) AND REF (C,4) REF(C,3) AND REF (C,3) REF(C,2) AND REF (C,2) REF(C,1) AND REF(L,2)/REF(H,1) 1.03 AND REF(H,1)/REF(L,1) 1.03 AND REF(C,1)/REF(O,1) 1.005;