#include <stdio.h>
#include <stdlib.h>
#define rows 7
#define cols 6

void read(int terrain[rows][cols]){
    int i,j;
    for(i = 0; i < rows; i ++)
        for(j = 0; j < cols; j++)
            scanf("%d",&terrain[i][j]);
}

int isValid(int terrain[rows][cols],int x,int y){
    if(x>=0 && x<rows && y>=0 && y<cols && terrain[x][y]==-1)
        return 1;
    else
        return 0;
}

void follow(int terrain[rows][cols]){
    int x=0, y=0;
    int nextX=1, nextY=1;
    int step = 1;

    while(x != nextX || y != nextY){
        x = nextX;
        y = nextY;

        terrain[x][y] = step;
        step ++;

        if(isValid(terrain,x,y+1) == 1)
            nextY = y+1;
        else if(isValid(terrain,x,y-1) == 1)
            nextY = y-1;
        else if(isValid(terrain,x+1,y) == 1)
            nextX = x+1;
        else if(isValid(terrain,x-1,y) == 1)
            nextX = x-1;
    }
}

void print(int terrain[rows][cols]){
    int i,j;
    for(i=0; i<rows; i++){
        for(int j=0; j<cols; j++)
            printf("%d ",terrain[i][j]);
        printf("\n");
    }
}

int main(){
    int terrain[rows][cols];

    read(terrain);
    follow(terrain);
    print(terrain);

    getchar();
    return 0;
}