const person = {
first_name: 'Monica',
last_name: 'Geller',
phone: '915-996-9739',
email: 'monica37@gmail.com',
street: '495 Grove Street',
city: 'New York',
country: 'USA',
};
for (const key in person) {
console.log(`${key} => ${person[key]}`);
}