Is It a Cat?

题意翻译

给定一个字符串及其长度，如果满足下列条件输出 ```YES``` 否则输出 ```NO```。 - 该字符串由四部分组成 - 每部分有且仅有一种字母（不分大小写），依次为 ```m```,```e```,```o```,```w```。 共 $t$ 组数据。 by @Larryyu

题目描述

You were walking down the street and heard a sound. The sound was described by the string $ s $ consisting of lowercase and uppercase Latin characters. Now you want to find out if the sound was a cat meowing. For the sound to be a meowing, the string can only contain the letters 'm', 'e', 'o' and 'w', in either uppercase or lowercase. Also: - string must start with non-empty sequence consisting only of characters 'm' or 'M' - it must be immediately followed by non-empty sequence consisting only of characters 'e' or 'E' - it must be immediately followed by non-empty sequence consisting only of characters 'o' or 'O' - it must be immediately followed by non-empty sequence consisting only of characters 'w' or 'W', this sequence ends the string, after it immediately comes the string end For example, strings "meow", "mmmEeOWww", "MeOooOw" describe a meowing, but strings "Mweo", "MeO", "moew", "MmEW", "meowmeow" do not. Determine whether the sound you heard was a cat meowing or something else.

输入输出格式

输入格式

The first line of input data contains a single integer $ t $ ( $ 1 \le t \le 10^4 $ ) — the number of test cases. The description of the test cases follows. The first line of each test case contains an integer $ n $ ( $ 1 \le n \le 50 $ ) — the length of the string describing the sound. The second line of each test case contains a string $ s $ of $ n $ characters. The string describes the sound you heard and consists only of lowercase and uppercase Latin letters.

输出格式

For each test case, output on a separate line: - YES if the sound was a cat meowing; - NO otherwise. You can output YES and NO in any case (for example, strings yEs, yes, Yes and YES will be recognized as positive response).

输入输出样例

输入样例 #1

7
4
meOw
14
mMmeoOoWWWwwwW
3
mew
7
MmeEeUw
4
MEOW
6
MmyaVW
5
meowA

输出样例 #1

YES
YES
NO
NO
YES
NO
NO

说明

In the first test case, the string consists of a sequence of characters 'm', 'e', 'O', 'w', which satisfies the definition of meowing. In the second test case, the string consists of a sequence of $ 3 $ characters 'm' and 'M', one 'e', a sequence of $ 3 $ characters 'o' and 'O' and a sequence of $ 7 $ characters 'w' and 'W', which satisfies the definition of meowing. In the third test case, the string does not describe a meowing because it lacks a sequence of 'o' or 'O' characters between 'e' and 'w'. In the fourth test case, the string contains the character 'U', so it does not describe a meowing.

题意翻译

给定一个字符串及其长度，如果满足下列条件输出 ```YES``` 否则输出 ```NO```。 - 该字符串由四部分组成 - 每部分有且仅有一种字母（不分大小写），依次为 ```m```,```e```,```o```,```w```。 共 $t$ 组数据。 by @Larryyu