String hashing(String d, int n) {
    char p[] = "0ZFTPK";
    char aa[] = {"QWERTYUIOPASDFGHJKLZXCVBNM1234567890!@#$%^&*()_-+=,<.>/?;:\'\"[{ |}]"};
    char bb[] = {"QWERTYUIOPASDFGHJKLZXCVBNM"};
    //Serial.println(sizeof(aa)); = 67
    for (int i = 0; i < 67; ++i) {
      d.toUpperCase();
      d.replace(aa[i], bb[random(0, 25)]);
    }
    d[4] = p[n];
int i = 0;
String op= String(d[4]);
if (op =="Z"){i=1;}else if (op=="F"){i=2;}else if (op=="T"){i=3;}else if (op=="P"){i=4;}else if (op=="K"){i=5;}

  Serial.println(i);

    return  d;
  }



void setup() {
  Serial.begin(115200);

  Serial.println( hashing("47URY44JU766TT", 1) );


}
void loop() {
  delay(10);
}