def fix_numbering(code, start):
    """Start is the lowest number from which we should remove 2"""
    for i, l in enumerate(code):
        if abs(l[0]) >= start:
            l[0] = l[0] / abs(l[0]) * (abs(l[0]) - 2)
        if abs(l[1]) >= start:
            l[1] = l[1] / abs(l[1]) * (abs(l[1]) - 2)
        code[i] = l
    return code
