password generator

function passwordGenerator(input){
    let n=Number(input.shift());
    let l=Number(input.shift());
    let line="";

    for (let i=1; i<=n; i++){
        for (let j=1; j<=n; j++){
            for (let k=97; k<97+l; k++){
                for (let m=97; m<97+l; m++){
                    for (let o=1;o<=n; o++){
                        if (o>i && o>j){
                            line+=i+""+j+String.fromCharCode(k)+String.fromCharCode(m)+o+" ";
                        }
                    }
                }
            }
        }
    }
    console.log(line);
    }
    passwordGenerator([3,1])