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Geek has a rosarium and it has **N*M** slots, some of them are empty and some of them have roses. Given **N*M **character array consists of **0's** and **1's**. **0** represents an empty spot and **1** represents a rose. The task is to find the maximum number of adjacent roses in geek's rosarium. For a spot **(i, j)** adjacent spots are **(i+1, j), (i-1, j), (i, j-1), (i, j+1), (i-1, j-1), (i-1, j+1), (i+1, j-1), **and **(i+1, j+1).**

**Input: **

1. The first line of the input contains a single integer* * **T** denoting the number of test cases. The description of **T** test cases follows.

2. The first line of each test case contains two space-separated integers **N **and** M.**

3.** **Next **N** lines consist of **M** characters.

**Output:** For each test case, print the maximum number of adjacent roses.

**Constraints:**

1. 1 <= T <= 100

2. 1 <= N, M <= 100

3. '0' <= arr[i][j] <= '1'

**Example:
Input:**

2

2 2

10

01

3 4

1001

0011

0101

**Output:**

2

5

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