public Tile(long id, char[][] content)
{
Id = id;
Content = content;
Sides = new[] {
TopSide,
RightSide,
BottomSide,
LeftSide,
string.Join("", TopSide.Reverse()),
string.Join("", RightSide.Reverse()),
string.Join("", BottomSide.Reverse()),
string.Join("", LeftSide.Reverse())
};
}
