#include <iostream>
using namespace std;
int main() {
int i,j,k=0,x=4,y=3;
for(i=1; i<=x; i++)
{
for(j=1; j<=y; j++)
{
k=k+1;
cout<<k;
}
k=k-2;
cout<<endl;
}
return 0;
}
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