Letters A, E, N, O, U, Z and X are 2.1cm tall by 2.5cm wide.
Letters B, D, H, Y, K, P and Q are 3cm tall by 2.7cm wide.
Letters S and V are 2.1cm tall by 2.5cm wide.
Letter F is 3cm tall by 2cm wide.
Letters G is 3cm tall by 2.7cm wide.
Letter T is 3cm tall by 1.9cm wide.
Letter L and I is 3cm tall by 1.3cm wide.
Letter J is 3.5cm tall by 2cm wide.
Letter M is 2.1cm tall by 5.3cm wide.
Letter C is 2.1cm tall by 2.5cm wide.
Letter R is 2.1cm tall by 1.9cm wide.
Letter W is 2.1cm tall by 3.9cm wide.