-2 +3 +3 -2" -3 -4 +5 -4 +3

+3...+6 +6 +6 -6 -7 -8 +8 -8 +8

(-1-4)...(-3-7) (-3-6) (+3+6) (+2+5)

(-1-4)...(-3-7) (-3-6) (+3+6) (+2+5)

-2 +3 +3 -2" -3 -4 +5 -4 +3

+3...+6 +6 +6 -6 -7 -8 +8 -8 +8

+6 +7 -7 -6 -7 -6 +6 +5 +6 -8...-2 -3' (-3-4)