function rosettaStone(input) {
    const templateRows = Number(input.shift());
    const templateMatrix = [];

    for (let i = 0; i < templateRows; i++) {
        let currentRow = input.shift().split(' ');
            currentRow = currentRow.map(Number)
        templateMatrix.push(currentRow);
    }

    const encodedMatrix = input.map((row) => row.split(' ').map((x) => Number(x)));

    const letterDecipher = letterCipher => {
        let num = letterCipher;
        if (letterCipher >= 27) {
            num = letterCipher % 27;
        }

        let letter = ' ';

        if (num > 0) {