Y 4 1 b

Y 4 1 bY 4 1 bY 4 1 bY 4 1 b
Y 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 b
Y 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 b
Y 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 b
Y 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 bY 4 1 b