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ValueError: list.index(x): x not in list on line 13
ValueError: list.index(x): x not in list on line 18
ValueError: list.index(x): x not in list on line 23
ValueError: list.index(x): x not in list on line 28
ValueError: list.index(x): x not in list on line 33
ValueError: list.index(x): x not in list on line 38
TypeError: slice indices must be integers on line 43
TypeError: slice indices must be integers on line 48