In this task, positions of two consecutive words have been swapped. You need to output the position of the swaped words. e.g. in the sentence 'Seattle has nice a weather', the word 'a' and 'nice' have been swapped. These words are at 3rd and 4th position respectively. So, the output should be (3, 4). Note that the index of first word is 1.

Example Input: a old very train engine and a coal car behind it
Example Output: (2, 3)

Example Input: a passenger train speeding by another one going in different a direction
Example Output: (10, 11)

Example Input: People tennis playing at an indoor grass court
Example Output:
(2, 3)