set object rectangle from 0,0  to  9,9 fc lt 1
set object rectangle from 10,0 to 19,9 fc lt 2
set object rectangle from 20,0 to 29,9 fc lt 3
set object rectangle from 30,0 to 39,9 fc lt 1
set object rectangle from 40,0 to 49,9 fc lt 2
set object rectangle from 50,0 to 59,9 fc lt 3
set object rectangle from 60,0 to 69,9 fc lt 1
set object rectangle from 70,0 to 79,9 fc lt 2
set object rectangle from 80,0 to 89,9 fc lt 3
set object rectangle from 90,0 to 99,9 fc lt 1

set object rectangle from 0,10  to  9,19 fc lt 4
set object rectangle from 10,10 to 19,19 fc lt 5
set object rectangle from 20,10 to 29,19 fc lt 6
set object rectangle from 30,10 to 39,19 fc lt 4
set object rectangle from 40,10 to 49,19 fc lt 5
set object rectangle from 50,10 to 59,19 fc lt 6
set object rectangle from 60,10 to 69,19 fc lt 4
set object rectangle from 70,10 to 79,19 fc lt 5
set object rectangle from 80,10 to 89,19 fc lt 6
set object rectangle from 90,10 to 99,19 fc lt 4

set object rectangle from 0,20  to  9,29 fc lt 7
set object rectangle from 10,20 to 19,29 fc lt 8
set object rectangle from 20,20 to 29,29 fc lt 9
set object rectangle from 30,20 to 39,29 fc lt 7
set object rectangle from 40,20 to 49,29 fc lt 8
set object rectangle from 50,20 to 59,29 fc lt 9
set object rectangle from 60,20 to 69,29 fc lt 7
set object rectangle from 70,20 to 79,29 fc lt 8
set object rectangle from 80,20 to 89,29 fc lt 9
set object rectangle from 90,20 to 99,29 fc lt 7

plot -100