CF118A.String Task

Petya started to attend programming lessons. On the first lesson his task was to write a simple program. The program was supposed to do the following: in the given string, consisting if uppercase and lowercase Latin letters, it:

• deletes all the vowels,
• inserts a character "." before each consonant,
• replaces all uppercase consonants with corresponding lowercase ones.

Vowels are letters "A", "O", "Y", "E", "U", "I", and the rest are consonants. The program's input is exactly one string, it should return the output as a single string, resulting after the program's processing the initial string.

Help Petya cope with this easy task.

佩佳开始参加编程课程。在第一节课上，他的任务是编写一个简单的程序。该程序需对给定的字符串（仅由大写和小写的拉丁字母组成）执行以下操作：

• 删除所有元音字母；
• 在每个辅音字母前插入一个字符 .；
• 将所有大写的辅音字母替换为对应的小写字母。

元音字母为 "A"、"O"、"Y"、"E"、"U"、"I"，其余字母均为辅音字母。程序的输入恰好为一个字符串，应输出经上述处理后得到的单个字符串。

请帮助佩佳完成这个简单任务。

The first line represents input string of Petya's program. This string only consists of uppercase and lowercase Latin letters and its length is from 1 to 100, inclusive.

第一行表示佩佳程序的输入字符串。该字符串仅由大写和小写拉丁字母组成，长度为 1 到 100（含）。

Print the resulting string. It is guaranteed that this string is not empty.

输出结果字符串。保证该字符串非空。