#include<bits/stdc++.h>
#define ll long long
using namespace std;
bool flag;
int main(){
	string a;
	getline(cin,a);
	double s=a.size();
	for(int i=0;i<=s;i++){
		if((a[i]>'a'&&a[i]<'z')||(a[i]>'A'&&a[i]<'Z')){
			cout<<'.';
		}else{
			cout<<a[i];
		}
	}
	cout<<endl;
	int f1=int(s/3*1.0+0.5);
	for(int i=0;i<f1-1;i++){
		cout<<a[i];
	}
	for(int i=f1-1;i<=s;i++){
		if((a[i]>'a'&&a[i]<'z')||(a[i]>'A'&&a[i]<'Z')){
			cout<<".";
		}else{
			cout<<a[i];
		}
	}
	cout<<endl;
	for(int i=f1;i<=s;i++){
		if(a[i]=='a'||a[i]=='e'||a[i]=='i'||a[i]=='o'||a[i]=='u'||a[i]=='A'||a[i]=='E'||a[i]=='I'||a[i]=='O'||a[i]=='U'){
			flag=1;
		}
	}
	for(int i=0;i<f1;i++){
		cout<<a[i];
	}
	if(flag==1){
		for(int i=f1;i<=s;i++){
			if(a[i]=='a'||a[i]=='e'||a[i]=='i'||a[i]=='o'||a[i]=='u'||a[i]=='A'||a[i]=='E'||a[i]=='I'||a[i]=='O'||a[i]=='U'){
				cout<<a[i];
			}else cout<<".";
		}
	}else{
		for(int i=f1;i<=f1*2;i++){
			cout<<a[i];
		}
	}
	for(int i=f1*2+1;i<s;i++){
		if((a[i]>'a'&&a[i]<'z')||(a[i]>'A'&&a[i]<'Z')){
			cout<<".";
		}else{
			cout<<a[i];
		}
	}
	return 0;
}

样例对了，但是提交只有十分，求调