In this task you are given a sentence. You must judge whether there exist two consecutive words within the sentence with flipped orders, that is, whether the sentence will make sense and be correct if the order of two consecutive words changes. Label the instances as "Inversion" or "Original" based on your judgment.

Input: Consider Input: How he'd felt about skipping two grades.

Output: Original


Input: Consider Input: We are witnessing a great but very silent revolution in our society.

Output: Original


Input: Consider Input: But he'd been always the master.


Output: Inversion