ob4 +5 -4' ob4 -3 -4' ob4 +5 | ob5 -6' -6 -7 -6 -7 od7 +8' | +8 +9 +8 -8 +7 +8 +7 -6 | +6 +7 +6 -5 +5 +6 +5 -4 | +4 -2 ob2 -2 +2 -2 -1 -2 | +4 -2 ob2 -2 +2 -2 -1 -2