[moved] PWM LED drive bad function of brightness with Arduino Nano

const int ledPin1 =  11;      // Set pin's in use :
const int ledPin2 =  10;
const int ledPin3 =  9;
const int ledPin4 =  6;

// Variables will change :
int ledState1 = LOW;             //
int ledState2 = LOW;
int ledState3 = LOW;             // ledState used to set the LED LED STATUS :
int ledState4 = LOW;
long previousMillis = 0;        // will store last time LED was updated :
long count = 0;

long interval = 140;           // interval at which to blink (milliseconds) lower faster blinks :

void setup() {
  // set the digital pin as output :

  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
}
void loop()
{

  do
  {
    unsigned long currentMillis = millis();

    if (currentMillis - previousMillis > interval) {
      // save the last time you blinked the LED
      previousMillis = currentMillis;

      // if the LED is off turn it on and vice-versa :
      if (ledState1 == LOW ) {
        ledState1 = HIGH;
        ledState2 = LOW;
      }
      else {
        ledState1 = LOW;
        ledState2 = HIGH;
        count++;
        // set the LED with the ledState of the variable :
      }
      analogWrite(ledPin1, ledState1); 
      analogWrite(ledPin2, ledState2);
    }
  } while (count < 3); //sets how many blinke, GREEN LED :
  ledState2 = LOW;
  analogWrite(ledPin2, ledState2);
  count = 0;
  //=========================================================
  delay(1000); // PAUSE and sets the time beteewen set green and read
  //=========================================================
  do
  {
    unsigned long currentMillis = millis();

    if (currentMillis - previousMillis > interval) {
      // save the last time you blinked the LED
      previousMillis = currentMillis;

      // if the LED is off turn it on and vice-versa:
      if (ledState3 == LOW) {
        ledState3 = HIGH;
        ledState4 = LOW;
      }
      else {
        ledState3 = LOW;
        ledState4 = HIGH;
        count++;
        // set the LED with the ledState of the variable:
      }
      analogWrite(ledPin3, ledState3);
      analogWrite(ledPin4, ledState4);
    }
  } while (count < 2);  //sets how many blinke, RED LED :
  ledState4 = LOW;
  analogWrite(ledPin4, ledState4);
  count = 0;
  //=========================================================
  delay(1400);  //sets the time between set green and read
  //=========================================================
}

 if (ledState3 == LOW) {
        ledState3 = HIGH;
        ledState4 = LOW;
      }
      else {
        ledState3 = LOW;
        ledState4 = HIGH;
...
count++
}