bankNumberGen

function bankNumberGen(m) {
    let a = Number(m[0]);
    let b = String(m[1]);
    let c = String(m[2]);
    let d = String(m[3]);
    let e = Number(m[4]);
    let n = Number(m[5]);
    let validNumCounter = 0;

    for (let i = a; i <= 99; i++) {
        for (let j = b.charCodeAt(0); j <= 'Z'.charCodeAt(0); j++) {
            for (let k = c.charCodeAt(0); k <= 'z'.charCodeAt(0); k++) {
                for (let o = d.charCodeAt(0); o <= 'Z'.charCodeAt(0); o++) {
                    for (let p = e; p >= 10; p--) {
                        if (i % 10 == 2 && p % 10 == 5) {
                            validNumCounter += 1;
                        }
                        if (validNumCounter == n) {
                            console.log
                            (`${i}${String.fromCharCode(j)}${String.fromCharCode(k)}${String.fromCharCode(o)}${p}`);
                            return;
                        }
                    }
                }
            }
        }
    }
}