public static string ToCardString(ulong bitCard)
{
string s = "";
var bcu = BitUtility.Instance;
while (bitCard != 0)
{
int i = bcu.BitScanForward(bitCard);
s += CardUtility.ToCardString(i) + ", ";
bitCard ^= 1ul << i;
}
return(s.TrimEnd(new char[] { ',', ' ' }));
}