for(let a = 1; a <= 3; a++)
{
    for(let b = 1; b <= 2; b++)
    {
        console.log(a + " " + b);
    }

}
/*
Lecture # 30 
    Topic : Nested Loop in JavaScript

    6. Nested Loop :
        Loop inside another loop.
            -   Used in patterns, matrices, grids

    Syntax :
        for(let a = 1; a <= 3; a++) ==> outside loop
        {
            for(let b = 1; b <=3; b++) ===> inside loop
            {

            }
        }
*/