2.6 x 3 cm 4.3 x 5 cm 5.1 x 6 cm 6 x 7 cm 6.9 x 8 cm 7.7 x 9 cm 9.4 x 11 cm 11.1 x 13 cm 12.8 x 15 cm 13.7 x 16 cm 16.3 x 19 cm 18 x 21 cm 18.8 x 22 cm 20.6 x 24 cm