public bool Empty()
{
return((Left.Count() +
Right.Count() +
Up.Count() +
Down.Count() +
LP.Count() +
MP.Count() +
HP.Count() +
PPP.Count() +
LK.Count() +
MK.Count() +
HK.Count() +
KKK.Count() +
Clear.Count()
) == 0);
}