Red Huang

//============================================================================  
// Name        : Security Panel.cpp  
// Date : 2013/3/31 下午9:48:08  
// Author : GCA  
//============================================================================  
#include <iostream>  
#include <cstdio>  
#include <cstring>  
#include <algorithm>  
#include <cmath>  
#include <climits>  
#include <vector>  
#include <set>  
#include <map>  
#include <queue>  
#include <cctype>  
#include <utility>  
using namespace std;  
#ifdef ONLINE\_JUDGE  
#define ll "%lld"  
#else  
#define ll "%I64d"  
#endif  
typedef unsigned int uint;  
typedef long long int Int;  
#define Set(a,s) memset(a,s,sizeof(a))  
#define Write(w) freopen(w,"w",stdout)  
#define Read(r) freopen(r,"r",stdin)  
#define Pln() printf("\\n")  
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()  
#define De(x)printf(#x"%d\\n",x)  
#define For(i,x)for(int i=0;i<x;i++)  
#define CON(x,y) x##y  
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\  
    printf("%d ",dp\[htx\]\[hty\]);}Pln();}  
#define M 55  
#define PII pair<int,int\>  
#define PB push\_back  
#define oo INT\_MAX  
#define Set\_oo 0x3f  
#define Is\_debug true  
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)  
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)  
#define eps 1e-6  
bool xdy(double x,double y){return x>y+eps;}  
bool xddy(double x,double y){return x>y-eps;}  
bool xcy(double x,double y){return x<y-eps;}  
bool xcdy(double x,double y){return x<y+eps;}  
int min3(int x,int y,int z){  
    int tmp=min(x,y);  
    return min(tmp,z);  
}  
int max3(int x,int y,int z){  
    int tmp=max(x,y);  
    return max(tmp,z);  
}  
int nx,ny;  
int mz\[10\];  
int path\[10\]\[10\];  
int ans\[100\];  
int ansnum;  
void light(int x,int y){  
    for(int i=y-1;i<=y+1;i++){  
        if(i>=ny||i<0)continue;  
        for(int j=x-1;j<=x+1;j++){  
            if(j>=nx||j<0)continue;  
//            debug("%d %d\\n",j-x+1,i-y+1);  
            if(path\[j-x+1\]\[i-y+1\]){  
//                debug("i%d j%d\\n",i,j);  
                mz\[i\]^=(1<<j);  
            }  
        }  
    }  
}  
bool dfs(int now,int depth){  
//    debug("now%d %d\\n",now,depth);  
//    for(int i=0;i<ny;i++){  
//        for(int j=0;j<nx;j++){  
////            printf("%d ",(mz\[i\]>>j)&1);  
//        }//Pln();  
//    }//Pln();  
  
  
    int x=now%nx;  
    int y=now/nx;  
    if(y>=2&&y<ny&&mz\[y-2\]!=(1<<(nx))-1){  
        return false;  
    }  
  
    bool judge=true;  
    for(int i=0;i<ny;i++){  
        if(mz\[i\]!=(1<<nx)-1){  
            judge=false;  
            break;  
        }  
    }  
    if(judge){  
        return true;  
    }  
    if(now>nx\*ny-1)return false;  
  
    if(dfs(now+1,depth))return true;  
    light(x,y);  
    ansnum=depth;  
    ans\[depth\]=now+1;  
    if(dfs(now+1,depth+1))return true;  
    light(x,y);  
  
    return false;  
}  
int main() {  
    ios\_base::sync\_with\_stdio(0);  
    int ff=0;  
    while(~scanf("%d%d%\*c",&ny,&nx)&&nx+ny){  
        char c;  
        Set(path,0);  
        Set(ans,0);  
        Set(mz,0);  
        for(int i=0;i<3;i++){  
            for(int j=0;j<3;j++){  
                c=getchar();  
                if(c=='\*')path\[j\]\[i\]=1;  
            }getchar();  
        }  
//        for(int i=0;i<3;i++){  
//            for(int j=0;j<3;j++){  
//                printf("%d ",path\[j\]\[i\]);  
//            }Pln();  
//        }Pln();  
        printf("Case #%d\\n",++ff);  
        if(dfs(0,0)){  
            printf("%d",ans\[0\]);  
            for(int i=1;i<=ansnum;i++){  
                printf(" %d",ans\[i\]);  
            }Pln();  
        }  
        else printf("Impossible.\\n");  
    }  
  
  
}