-2 -2' -3' | -2 -2' -3' | +4 | -4 | -2 -2' -3' | -2 -2' -3' | ob4 | -4' | -2 -2' +1 | -2 -2' +4 | -2 -2' -1 | -1' +1 | +10' | +1 -1' | -3' +4 | -4' | ob6 +7 | od7 | +10'' +10 | +10