#include <iostream>
#include <string>
#include <vector>

using namespace std;

void merge(const vector<string> & vect1, const vector<string> & vect2){
	size_t i1 = 0, i2 = 0, diff1 = 0, diff2 = 0, len1 = vect1.size(), len2 = vect2.size();	
	
//cout << " '" << len1 << "," << len2 <<"' ";
	while(i1 < len1 && i2 < len2){
		if(vect1[i1] == vect2[i2]){
			cout << vect1[ i1 ] << " ";			
			i1++;
			i2++;			
			continue;
		}
		diff1 = 0;
		diff2 = 0;
		while((i1 + diff1) < len1 && vect2[i2] != vect1[ i1 + diff1 ]){
			diff1++;
		}
		while((i2 + diff2) < len2 && vect1[i1] != vect2[ i2 + diff2 ]){
			diff2++;
		}
//cout << " '" << diff1 << "," << diff2 <<"' ";		
		if((i1 + diff1) == len1 && (i2 + diff2) == len2){
			if(vect1[i1] < vect2[i2])
				cout<< vect1[ i1++ ] << " ";
			else
				cout<< vect2[ i2++ ] << " ";
			continue;	
		}
	
		if((i1 + diff1) == len1){
			while(diff2--){
				cout << vect2[ i2++ ] << " ";	
			}
			cout << vect2[ i2++ ] << " ";
			i1++;
			continue;
		}
		if((i2 + diff2) == len2){
			while(diff1--){
				cout << vect1[ i1++ ] << " ";	
			}
			cout << vect1[ i1++ ] << " ";
			i2++;
			continue;
		}
		if(diff1 < diff2){
			while(diff1--){
				cout << vect1[ i1++ ] << " ";	
			}
			cout << vect1[ i1++ ] << " ";
			i2++;
			continue;
		}else{
			while(diff2--){cout << " '" << diff1 << "," << diff2 <<"' ";
				cout << vect2[ i2++ ] << " ";	
			}
			cout << vect2[ i2++ ] << " ";
			i1++;
			continue;
		}
	}
	while(i1 < len1){
		cout << vect1[ i1++ ] << " ";
	}
	while(i2 < len2){
		cout << vect2[ i2++ ] << " ";
	}
	cout << ".\n";
}


int main(){
	string str;
	vector<string> vect1, vect2;
	while(1){
		vect1.clear();
		vect2.clear();
		cin >> str;
		if(str == "."){
			return 0;
		}
		while(str != "."){
			vect1.push_back(str);
			cin >> str;
		}
		cin >> str;
		while(str != "."){
			vect2.push_back(str);
			cin >> str;
		}
		merge(vect1, vect2);		
	}
	return 0;
}