function main() {
    const regex4ipv4 = /^(((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{1,2}))\.){3}((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{1,2}))$/;
    const regex4ipv6 = /^(([0-9a-f]{1,4}):){7}([0-9a-f]{1,4})$/;
    for (let i = 1; i < inputLines.length; i++) {
        const str = inputLines[i];
        if (regex4ipv4.test(str)) {
            console.info('IPv4');
        } else if (regex4ipv6.test(str)) {
            console.info('IPv6');
        } else {
            console.info('Neither');
        }
    }
}