4xo1 3xo1y2 2xo1y 1xo1 0xo1y2

f7n1y2 e7n1y d7n1 c7n1y2 b7n1y

qgn1y pgn1 ogn1y2 ngn1y mgn1

1pm1 0pm1y2 zpm1y ypm1 xpm1y2

czl1y2 bzl1y azl1 9yl1y2 8yl1y