#include <stdio.h>

typedef struct
{
  int unexp;
  int exped[120];
  int n_exped;
  int dist;
} room_t;

room_t room[120];
int n_room;

int track[120];
int n_track;

int cmp(const int *a, const int *b)
{
  if (*a > *b) return 1;
  else if (*a == *b) return 0;
  return -1;
}

void ptrack()
{
  int i;
  for (i = 0; i < n_track; i++) {
    printf("%d(%d) ", track[i], room[track[i]].dist);
  }
  printf("\n");
}

int main()
{
  int N;
  int i, j;
  int l;
  int x;

  freopen("ninja.txt", "r", stdin);

  scanf("%d", &N);
  for (l = 0; l < N; l++) {
    n_room = 0;
    n_track = 0;
    while (1) {
      scanf("%d", &x);
      /*
      printf(">>%d\n))", x);
      ptrack();
      */
      if (x == 0) break;
      if (x > 0) {
	if (n_room == 0) {
	  room[n_room].unexp = x;
	  room[n_room].n_exped = 0;
	  room[n_room].dist = 0;
	  track[0] = 0;
	}
	else {
	  room[n_room].dist = room[track[n_track - 1]].dist + 1;

	  room[n_room].unexp = x - 1;
	  room[n_room].exped[0] = track[n_track - 1];
	  room[n_room].n_exped = 1;

	  room[track[n_track - 1]].unexp--;
	  room[track[n_track - 1]].exped[room[track[n_track - 1]].n_exped] = n_room;
	  room[track[n_track - 1]].n_exped++;

	  track[n_track] = n_room;
	}
	n_room++;
	n_track++;
      }
      else if (x < 0) {
	room[track[room[track[n_track - 1]].dist + x]].unexp--;
	room[track[room[track[n_track - 1]].dist + x]].exped[room[track[room[track[n_track - 1]].dist + x]].n_exped] = track[n_track - 1];
	room[track[room[track[n_track - 1]].dist + x]].n_exped++;

	room[track[n_track - 1]].unexp--;
	room[track[n_track - 1]].exped[room[track[n_track - 1]].n_exped] = track[room[track[n_track - 1]].dist + x];
	room[track[n_track - 1]].n_exped++;

      }
      for (i = n_track - 1; i >= 0; i--) {
	if (room[track[i]].unexp > 0) {
	  break;
	}
	else {
	  n_track--;
	}
      }
    }

    for (i = 0; i < n_room; i++) {
      printf("%d", i + 1);
      qsort(room[i].exped, room[i].n_exped, sizeof(int), cmp);
      for (j = 0; j < room[i].n_exped; j++) {
	printf(" %d", room[i].exped[j] + 1);
      }
      printf("\n");
    }
    
  }
}