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 woman riding skis on top a of snow covered ground
Example Output: (7, 8)

Example Input: A man brushing his teeth a in mirror at a sink
Example Output: (6, 7)

Example Input: A person sitting on top of a rock over a river near city a
Example Output:
(13, 14)