#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main() {

  /*  int license[20];
    char* hex = "e3e3",*p;
    int used = 0;
    int i = 0;
    int l1;
    while((sscanf(hex+used,"%x",&license[i]))==1)
    {
        printf("%d ",license[i]);
        i++;
        used += 4;
    }
l1=strtol(hex,&p,16);
printf("%d",l1);*/
/*char hex[] = "6A4e32";                          // here is the hex string
int num = (int)strtol(hex, NULL, 16);       // number base 16
printf("%c\n", num);                        // print it as a char
printf("%d\n", num);                        // print it as decimal
printf("%X\n", num);                        // print it back as hex
int y;
char w1,w2;
int e1,e2,y,i;
 scanf("%d",&y);
for(i=1;i<=y;i++){
scanf("%c %c",&w1,&w2);

scanf("%d %d",&e1,&e2);
scanf("\n");

 if(w1=='M'){
aux=realloc(a[e1],4*(x[e1]+e2)*sizeof( unsigned int));
scanf("%x",&ds);
 for(int k=1;k<=e2/4;k++)
x[e1]++;
a[e1][x[e1]]=ds;

}
if(w1=='D')
{
//scanf("%x",&ds);

}


}*/
 int x[100],i,j,n;
scanf("%d",&n);
char ***a,vb[10],mb,bv[10];
double r;
    a=malloc(200*n*sizeof(char));

    for(i=0;i<n;i++)
    { scanf("%d",&x[i]);
        a[i]=malloc(10*(x[i]+1)* sizeof(char));
        for(j=0;j<x[i];j++)
           { a[i][j]=malloc(10 * sizeof(char));

scanf("%s",a[i][j]);
}
}
//a[5]=realloc(a[5],10*(x[5]+20)*sizeof(char));

//a[5]=malloc(10*x[5]*sizeof(char));
//x[5]++;
//a[5]=realloc(a[5],10*x[5]*sizeof(char));
 //a[5][x[5]]= malloc(20*sizeof(char));

x[5]++;
scanf("%s",vb);
a[5][x[5]]=malloc(20*sizeof(char));
printf("%s",a[5][x[5]]);
//a[5][x[5]]="0000000";
//memcpy(a[5][10],vb,10);
//printf("%s",a[5][x[5]]);
 //printf("%s",a[5][x[5]]);
  //a[5][x[5]][0]='1';
//memcpy(a[5][x[5]],"000000",10);
//printf("%s",a[5]);
//scanf("%s",vb);
//strcpy(a[5][x[5]],vb);
//memcpy(a[5][x[5]-1],vb,10);
//x[5]++;
//memcpy(a[5][x[5]],vb,10);
//printf("%c",a[5][x[5]-1][0]);
// memcpy(a[5][x[5]],vb,10);
//strcpy(a[5][x[5]],vb);
  for(i=0;i<n;i++){
for(j=0;j<x[i];j++){
printf("%s ",a[i][j]);
}
printf("\n");
}

return 0;
}