#include<iostream> using namespace std; int main(){ int a,i,j,k; cin>>a; char t,c[a-1][49]; for (i=0;i<a;i++){ scanf("%s",c[i]); } for(i=0;i<a;i++){ j=0; while(c[i][j]!='\0'){ t=c[i][j]; c[i][j]=c[i][j+1]; c[i][j+1]=t; j+=2; } } for (i=0;i<a;i++){ printf("%s\n",c[i]); } return 0; }