You are given the first 20 digits of π: 31415926535897932384. In each move, you can select a contiguous group of 5 digits and increase/decrease them all by the same integer, provided that each resulting digit stays between 0 and 9 inclusive. For example you can increase the first 5 digits by 2, giving you 53637926535897932384. However you cannot decrease the same 5 digits by 2 as that would result in negative digits. Can you bring every digit to 0?
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