function getHash(key) {
const b = key.length;
const c = key.split("").map((k) => abc.findIndex((ab) => ab === k))[0];
const d =
key
.split("")
.map((k) => findNthPrime(abc.findIndex((ab) => ab === k) + 1))
.reduce((acc, cv) => acc + cv, 0) % 10;
return { b, c, d };
}