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In Polycarpus' dubstep remix, he inserts the word 'WUB' arbitrarily many times before the first word, after the last word, and between words (including multiple times between words). Your task is to restore the original song by removing all the occurrences of 'WUB' and restoring a space between words.
A single line containing a string s representing the dubstep remix. The string consists of uppercase English letters and has length between 1 and 200 characters.
Print the original words of the song separated by a single space. There should be no leading or trailing spaces.
1 ≤ length of s ≤ 200
Example 1
Input
WUBWUBHELLOWUBWORLDWUB
Output
HELLO WORLD
Explanation
All occurrences of 'WUB' are treated as word separators. Original words 'HELLO' and 'WORLD' are extracted.