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: Sleek silver SST with sunny blue behind sky
Example Output: (7, 8)

Example Input: an is elephant walking on some grass and some trees
Example Output: (2, 3)

Example Input: Two taxis at stop a light in what looks like a big city
Example Output:
(4, 5)