Clearly added in a different hand
+7 | -7 -4 -4 -6 +6 -6 | -7 -4 -4 +6 +5 +5 +7 | -7 -4 -4 -6 +6 -6 | -7 -6 +6 +5 -4 -4 -4 | +7 | -7 -6 -8 -7 -6 +6 -6 | -7 +6 +7 +6 +5 +5 +7 | -7 +6 -8 +7 -6 +6 -6 | -7 -6 +6 +5 -4 -4 -4