bertrandbms
+4 -3 +4 -4 ob4 | +4 -3 +4 -4 ob4 | ob4 -5 +5 -5 +6 | -6' +10 +10 +10' od9 | +9 -9 +8' | +4 -3 +4 -4 ob4 | ob4 -4 ob4 -5 ob5 | ob4 -4 ob4 -5 ob5 -5 | +5 -5 ob5 -5 ob5 | ob5 +6 ob5 +6 -6' -6 -7 -7 | -7 +7 | +7 +7 | -7 -6' -3 -2 | +4 | +1 +1 +1 -1 ob1 -1 | +4 -3 +4 -4 ob4 -4 | -5 +5 -5 +6 -6' +6 | -7 ob6 -7 od7 -8 od7 | +6 +4 | -2' +1