-1 -2 -2 -2" -1 -2 -2 -2 -2" -1 -2 -2 -2" -1 -2

-1 -2 -2 -2" -1 -2 -2 -2 -2" -1 -2 -2 -2" -1 -2

+3 +4 +4 -3' +3 +4 +4 +4 -3' +3 +4 +4 -3' +3 +4

-1 -2 -2 -2" -1 -2 -2 -2 -2" -1 -2 -2 -2" -1 -2

-3" -4 -4 -4 -3" -4 -4 -4 -4 -3"

+4 +4 -3' +3 +4 +4 +4 -3' +3

-2 -2 -2" -1 -2 -2 -2 -2" -1 -2 -2 -2" -1 -2 -2"