1item[0] = 1 2item[1] = 2 3item[2] = 2 4item[3] = -1 5i = 1 6item[0] = 1 7item[1] = 2 8item[2] = 2 9item[3] = -1 10item[0] = 1 11item[1] = 2 12item[2] = 2 13item[3] = -1 14i = 1 15item[0] = 1 16item[1] = 2 17item[2] = 2 18item[3] = -1 19