#include <iostream> #include <cstdlib> #include <cstring> using namespace std; int main() { int i,n,num1,num2,j; char str[100]; char str1[100]; char ansewr[200]; cin >>n; for(i=0;i<n;i++) { memset(str,0,sizeof(str)); memset(str1,0,sizeof(str1)); memset(ansewr,0,sizeof(ansewr)); cin >>str>>str1; num1 = strlen(str); num2 = strlen(str1); for(j=0;j<num1/2;j++) { ansewr[j] = str[j]; } for(j=num1/2;j<num1/2+num2;j++) { ansewr[j] = str1[j-num1/2]; } for(j=num1/2+num2;j<num1+num2;j++) { ansewr[j] = str[j-num2]; } cout <<ansewr<<endl; } return 0; }