my @buffer = qw[x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 y0 y1 y2 y3 y4 y5 y6];

##</code><code>##

C:\test>1118256
10 7 17 3
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 y0 y1 y2 y3 y4 y5 y6
y0 y1 y2 y3 y4 y5 y6 x7 x8 x9 x0 x1 x2 x3 x4 x5 x6
y0 y1 y2 y3 y4 y5 y6 x4 x5 x6 x0 x1 x2 x3 x7 x8 x9
y0 y1 y2 y3 y4 y5 y6 x1 x2 x3 x0 x4 x5 x6 x7 x8 x9
y0 y1 y2 y3 y4 y5 y6 x2 x3 x0 x1 x4 x5 x6 x7 x8 x9
y0 y1 y2 y3 y4 x2 x3 x0 y6 y5 x1 x4 x5 x6 x7 x8 x9