const int led1 = 3;
const int led2 = 5;
const int led3 = 9;
const int led4 = 11;


void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT); 
}

void loop() {
  analogWrite(led1, 255*0.005);
  analogWrite(led2, 255*0.02);
  analogWrite(led3, 255*0.5);
  analogWrite(led4, 255*0.99);
}