Persistence Is Key

10 x 15 cm 13 x 18 cm 15 x 20 cm 14.8 x 21 cm (A5) 18 x 24 cm 20 x 30 cm 21 x 29.7 cm (A4) 21 x 30 cm 30 x 40 cm 29.7 x 42 cm (A3) 30 x 45 cm 40 x 60 cm 42 x 59.4 cm (A2) 50 x 70 cm 50 x 75 cm 60 x 80 cm 59.4 x 84 cm (A1) 60 x 90 cm 70 x 100 cm 80 x 120 cm 84 x 118.9 cm (A0) 90 x 120 cm 100 x 140 cm 100 x 150 cm 110 x 150 cm 120 x 160 cm 130 x 170 cm 130 x 180 cm