[(-1)2 pairs of black (1.0cm)]

[(-2)2 pairs of blue (1.0cm)]

[(-3)2 pairs of white (1.0cm)]

[(-4)2 pairs of blue (1.5cm)]

[(-5)2 pairs of white (1.5cm)]

[(-6)2 pairs of skin color (1.0cm)]

[(-7)2 pairs of pink (1.0cm)]

[(-8)Random a]

[(-9)2 pairs of pink (1.8cm)]

[(-10)2 pairs of pink (1.5cm)]

[(-11)1 pair of white (1.8cm) +1 pair of skin color (1.8cm)]

[(-12)2 pairs of black (1.5cm)]

[(-13)1 pair of white (1.0cm) +1 pair of skin color (1.0cm)]

[(-14)2 pairs of black (1.8cm)]

[(-15)2 pairs of white (1.8cm)]

[(-16)2 pairs of blue (1.8cm)]

[(-17)2 pairs of skin color (1.8cm)]