Strong Language Problem Code: SSCRIPT


Read problem statements in Bengali, Mandarin Chinese, Russian, and Vietnamese as well.

A string is said to be using strong language if it contains at least  consecutive characters '*'.

You are given a string  with length . Determine whether it uses strong language or not.


  • The first line of the input contains a single integer  denoting the number of test cases. The description of  test cases follows.
  • The first line of each test case contains two space-separated integers  and .
  • The second line contains a single string  with length . 


Print a single line containing the string "YES" if the string contains strong language or "NO" if it does not (without quotes).

You may print each character of each string in uppercase or lowercase (for example, the strings "yEs", "yes", "Yes" and "YES" will all be treated as identical).


  •  contains only lowercase English letters and characters '*'
  • Sum of  over all testcases is atmost .


Subtask #1 (30 points): , Sum of  over all testcases is atmost 

Subtask #2 (70 points): original constraints

Example Input

5 2
5 2
5 1

Example Output



Example case 1: Since there are no two consecutive characters '*', the string does not contain strong language.

Example case 2: There are two adjacent characters '*', so the string contains strong language.

Example case 3: Since there are no characters '*' in the string, it does not contain strong language.


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