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 man is riding a skateboard a in skate park
Example Output: (7, 8)

Example Input: Four red airplanes in formation with smoke trailing
Example Output: (7, 8)

Example Input: A person on the beach demonstrating how to lie a on surfboard while being filmed
Example Output:
(10, 11)