#include<stdio.h>#include<string.h>#include<string>#include<set>#include<vector>#include<iostream>using namespace std;string a,op,b;char ans[2000];char tmps[20];multiset<string> myset;int main(){while(1){myset.clear();cin >> a;if(a == ".")break;cin >> op >> b;if(op[0] == '+'){if(a.length() == 2){cout << b << endl;continue;}else if(b.length() == 2){cout << a << endl;continue;}int p = 0;for(int i = 0;i < a.length() - 1;++i)ans[p++] = a[i];p = a.length() - 1;ans[p++] = ',';for(int i = 1;i < b.length() - 1;++i)ans[p++] = b[i];ans[p++] = ']';ans[p] = ' ';cout << ans << endl;}else{string t = "";for(int i = 1;i < b.length();++i){if(b[i] == ',' || b[i] == ']'){myset.insert(t);t = "";}else{sprintf(tmps,"%c",b[i]);t = t + string(tmps);}}t = "";int p = 0;string ansstr = "[";for(int i = 1;i < a.length();++i){if(a[i] == ',' || a[i] == ']'){if(myset.find(t) == myset.end()){if(ansstr[ansstr.length() - 1] != '[')ansstr += ",";ansstr += t;}elsemyset.erase(myset.find(t));t = "";}else{sprintf(tmps,"%c",a[i]);t = t + string(tmps);}}ansstr += "]";cout << ansstr << endl;}}return 0;}
