function regEx(input = []) {
    let num = Number(input.shift());
    let pattern = /^@#+(?=[A-Z])([A-Za-z0-9]{6,})(?<=[A-Z])@#+$/gm;
    let go = []
    for (let i = 1; i <= num; i++) {
        let data = input.shift();
        let match = pattern.exec(data);

        if (match !== null) {
            go.push(match[1])
        } else {
            console.log(`Invalid barcode`);
        }
    }
}

regEx([
    '6',
    '@###Val1d1teM@###',
    '@#ValidIteM@#',
    '##InvaliDiteM##',
    '@InvalidIteM@',
    '@#Invalid_IteM@#',
    '@#ValiditeM@#'
])