1D - 1H
This bid has two meanings either 6 - 12- 4+ H or 0-5 with different length in diamond. (pass if (5HC 4D or 4HC 5D or 3HC 6D or 0-2HC 7+D))
Response must be 1S if 4+ in spade or 1NT if less then 4 spade. this give the 1H response a chance to pass for the 0-5 HCP hands.