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1D 1H 1S
1D 1H !NT

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.

bid HCP Condition
1S all 4+ S
1NT all no 4 card spade