function main() {

    let arr = Array(6);

    for (let i = 0; i < 6; i++) {
        arr[i] = readLine().replace(/\s+$/g, '').split(' ').map(arrTemp => parseInt(arrTemp, 10));
    }
    
    var hgSum = -9 * 7; //smallest possible hourglass sum
    
    //loop through the lines until the hourglass is reaching the bottom
    for (let l = 0; l < arr.length-2; l++){
        const arrLine = arr[l];
        
        //loop through the line until the top of the hourglass reaches the end of the line
        for (let i = 0; i < arr[l].length - 2; i++){
            var hourglass = arrLine.slice(i,i+3); //hourglass top
            hourglass.push(arr[l+1][i+1]); //hourglass waist
            hourglass.push(...arr[l+2].slice(i,i+3));//hourglass bottom
            // console.log(hourglass);
            
            var tempSum = hourglass.reduce((a,b) => a + b);
            // console.log(tempSum);
            if (tempSum > hgSum){
                hgSum = tempSum;
                }
            }
        }
        console.log(hgSum);
    }