l = ['a', 'e', 'i', 'o', 'u', 'y']
L = ["A", "E", "I", "O", "U", "Y"]
n = input()
string = ""
for i in n:
if i not in (l + L):
if i.isupper():
string += '.' + i.lower()
else:
string += '.' + i
print(string)#include <bits/stdc++.h>
using namespace std;
int main()
{
string in="";
cin>>in;
string out="";
int n=in.size();
char c='0';
for(int i=0;i<n;i++)
{
c=tolower(in[i]);
if(c!='a'&&c!='e'&&c!='i'&&c!='o'&&c!='u'&&c!='y')
{
out=out+".";
out=out+c;
}
}
cout<<out;
return 0;
}1154A - Restoring Three Numbers | 750A - New Year and Hurry |
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1333A - Little Artem | 432D - Prefixes and Suffixes |
486A - Calculating Function | 1373B - 01 Game |
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302A - Eugeny and Array | 1638B - Odd Swap Sort |
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131A - cAPS lOCK | 1635A - Min Or Sum |
474A - Keyboard | 1343A - Candies |
1343C - Alternating Subsequence | 1325A - EhAb AnD gCd |
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550B - Preparing Olympiad | 939B - Hamster Farm |
732A - Buy a Shovel | 1220C - Substring Game in the Lesson |