-6' -5 -4' | -6' -6' -5 -5 -4' -4' | +5 +7 -5 | -7 -5 +7 +5 | -3 +4 -4' -4 | +5 -5 ob5 +6 | -6 -6 -6' +6 | -5 -4 ob4 +5 | -5 -5 -5 -6' -6 | -6 -6 -6' -5 -4' | -6' -6' -5 -5 -4' -4'