petStorm
This is a reverse-challenge of [this](https://codegolf.stackexchange.com/questions/203893/bl-lu-ur-rr-ry-yv-vi-is-si-io-on-blur-the-text/) challenge. Given an input string, check whether the string is blurry. ## What's a blurry string? Take a non-blurrified string `abc` as an example. You repeat every character of this twice: ``` aabbcc ``` And then insert spaces at every odd-even index. ``` a ab bc c ``` Then, remove the preceding 2 and succeeding 2 extra characters. ``` ab bc ``` As an example, all of these strings are blurry (the empty line stands for an empty string): ``` "a" -> "ab" ->ab "abc" ->ab bc "abcd"->ab bc cd ... ``` ## Specification * The input string consists purely of printable ASCII characters. The only whitespace it will contain is the space character. * You don't have to remove extra characters before the check. * Your output can consist of any trailing whitespace, as long as it's possible to tell a truthy result from a falsy result. ## Test cases ``` "" -> True "ab" -> True "ab bc" -> True "ab bc cd"-> True "a" -> False "abc" -> False "ab bc cd"-> False "ab#bc#cd" -> False "abbccd" -> False "a ab bc cd"-> False "a a ab b b"-> False "ba cb dc" -> False "ba bc dc" -> False ```