#include<iostream>
#include<cstdio>
#include<cstring>
#define M 35
#define N 100
using namespace std;
char graph[M][N],bound,mark,inp[10];
int pocket,hv,m,n,Max;
int next[4][2]={{-1,0},{0,-1},{1,0},{0,1}};
bool Visited[M][N];
void DFS_Visit(int,int);
int main()
{
int t,i=0,j,n;
freopen("in.txt","r",stdin);
freopen("out.txt","w",stdout);
gets(inp);
sscanf(inp,"%d",&t);
m = -1;
while(t--)
{
while(gets(graph[++m]))
if(graph[m][0]=='_')
break;
bound = '*';Max=0;
for(i=0;i<m;i++)
{
n = strlen(graph[i]);
if(Max<n)Max=n;
for(j=0;j<n;j++)
if(graph[i][j]!=' ' && graph[i][j]!='*')
bound = graph[i][j];
}
Max=Max+5;
for(i=0;i<=m;i++)
{
n = strlen(graph[i]);
for(j=n;j<=Max;j++)
graph[i][j] = ' ';
graph[i][j] = '\0';
}
memset(Visited,false,sizeof(Visited));
for(i=0;i<m;i++)
{
n = strlen(graph[i]);
for(j=0;j<n;j++)
if(graph[i][j]=='*')
{
graph[i][j] = ' ';
DFS_Visit(i,j);
}
}
for(i=0;i<=m;i++)
{
n = strlen(graph[i]);
for(j=n-1;graph[i][j]==' ';j--);
graph[i][j+1] = '\0';
}
for(i=0;i<=m;i++)
printf("%s\n",graph[i]);
m = -1;
}
return 0;
}
void DFS_Visit(int x,int y)
{
int i,tx,ty;
Visited[x][y]=true;
for(i=0;i<4;i++)
{
tx=x+next[i][0],ty=y+next[i][1];
if(tx>=0&&tx<m&&ty>=0&&ty<Max)
{
if(graph[tx][ty]==bound)
graph[x][y] = '#';
if(!Visited[tx][ty]&&graph[tx][ty]==' ')
DFS_Visit(tx,ty);
}
}
}
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