by Irwin
+5 | +6 -5 +6 +7 +5 | -5 +5 -5 -6 +4 | -3 -4 +6 -7 -7 | -6 +6 +6 +5 | +6 -5 +6 +7 +5 | -5 +5 -5 -6 +6 | +6 -6 +6 -5 +5 -4 | +4 +4 | +4 | -3 -4 +6 -7 -6 | +6 -5 +5 -4 | +4 -3 +4 -3'' -2 | -2' -3'' +4 +5 -4 | -3 -4 +6 -7 -6 | +6 -5 +5 -4 | -4 -4' -4 -7 -6 | +6 +6