function passGenerator(input) {

    let n = Number(input.shift());
    let l = Number(input.shift());
    let output ="";


    for(let x1 = 1; x1 <= n; x1++) {
        for(let x2 = 1; x2 <=n; x2++){
            for(let x3 = 97; x3 <= 96+l; x3++) {
                let l1 = String.fromCharCode(x3);
                for(let x4 = 97; x4 <= 96+l; x4++) {
                    let l2 = String.fromCharCode(x4)
                    for(let x5 = 1; x5 <= n; x5++) {
                        if (x5 > x1 && x5 >x2) {
                            output+=`${x1}${x2}${l1}${l2}${x5} `
                        }

                    }
                }
            }
        }
    }
    console.log(output);
}