Miki06

const rows = 6;
const columns = 10;

let result = '';
for (let row = 0; row < rows; row++) {
    for (let column = 0; column < columns; column++) {
        const index = row * columns + column + 1;
        result += index.toString().padStart(2, '0');

        if (column < columns - 1) {
            result += ' ';
        }
    }

    if (row < rows - 1) {
        result += '\n';
    }
}

console.log(result);