private void AddCoordinates(int coord, int pos)
{
Label lblNumbers = new Label();
lblNumbers.Text = (coord + 1).ToString();
lblNumbers.Height = SIZE;
lblNumbers.Width = SIZE;
lblNumbers.TextAlign = ContentAlignment.MiddleCenter;
lblNumbers.Font = this.LabelFont;
lblNumbers.BackColor = BACK_COLOR;
lblNumbers.Location = new Point(this.Location.X, pos + this.Location.Y);
this.Coordinates.Add(lblNumbers);
Label lblLetters = new Label();
lblLetters.Text = letters[coord].ToString();
lblLetters.Height = SIZE;
lblLetters.Width = SIZE;
lblLetters.TextAlign = ContentAlignment.MiddleCenter;
lblLetters.Font = this.LabelFont;
lblLetters.BackColor = BACK_COLOR;
lblLetters.Location = new Point(pos + this.Location.X, this.Location.Y);
this.Coordinates.Add(lblLetters);
}