x 
 -3 
 4 
 7 
 -8 
 0 
 1 
 -5 
 2 
 -9 
 -4
 12
 -16
 -28
 32
 0
 -4
 20
 -8
 36
 -7
 21
 -28
 -49
 56
 0
 -7
 35
 -14
 63
 8
 -24
 32
 56
 -64
 0
 8
 -40
 16
 -72
 -6
 18
 -24
 -42
 48
 0
 -6
 30
 -12
 54
 9
 -27
 36
 63
 -72
 0
 9
 -45
 18
 -81
 1
 -3
 4
 7
 -8
 0
 1
 -5
 2
 -9
 -2
 6
 -8
 -14
 16
 0
 -2
 10
 -4
 18
 3
 -9
 12
 21
 -24
 0
 3
 -15
 6
 -27
 -5
 15
 -20
 -35
 40
 0
 -5
 25
 -10
 45