public static Turn operator +(Turn t1, Turn t2)
{
List <Tuple <char, string> > list = new List <Tuple <char, string> >();
list.AddRange(t1.SymbolList);
list.AddRange(t2.SymbolList);
Turn res = new Turn();
res.SymbolList = list;
res.value = t1.value + t2.value;
res.AddInString(t1.SymbolList.Count, t2.SymbolList.Count);
return(res);
}