Python3 Solution

import math import os import random import re import sys

if name == 'main':

arr = []

for _ in range(6):
    arr.append(list(map(int, input().rstrip().split())))
# print(arr)

max_hg =  curr_hg = float('-inf')

for i in range(4):
    for j in range(4):
        first_row = arr[i][j] + arr[i][j+1] + arr[i][j+2]
        second_row = arr[i+1][j+1]
        third_row = arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2]
        curr_hg = first_row + second_row + third_row

        if curr_hg > max_hg:
            max_hg = curr_hg

print(max_hg)