void setup() {
 pinMode(0,OUTPUT);
 pinMode(1,OUTPUT);
 pinMode(4,OUTPUT);
 digitalWrite(0,HIGH);
 digitalWrite(1,HIGH);
 digitalWrite(4,HIGH);
}

void loop() {
  int i;
  digitalWrite(0,HIGH);
  digitalWrite(1,HIGH);
  digitalWrite(4,HIGH);
  //---------------------------------------------------------------
  //                      Pattern 1
  //---------------------------------------------------------------
  digitalWrite(0,LOW);
  delay(2000);
  digitalWrite(0,HIGH);
  delay(1000);
  digitalWrite(1,LOW);
  delay(2000);
  digitalWrite(1,HIGH);
  delay(1000);
  digitalWrite(4,LOW);
  delay(2000);
  digitalWrite(4,HIGH);
  delay(1000);
  //---------------------------------------------------------------
  //                      Pattern 2
  //---------------------------------------------------------------
 for(i=255;i>=0;i--)
  {
  analogWrite(0,i);
  delay(10);
  }
  for(i=0;i<=255;i++)
  {
  analogWrite(0,i);
  delay(10);
  }
  for(i=255;i>=0;i--)
  {
  analogWrite(1,i);
  delay(10);
  }
  for(i=0;i<=255;i++)
  {
  analogWrite(1,i);
  delay(10);
  }
  delay(500);
  for(i=255;i>=0;i--)
  {
  analogWrite(4,i);
  delay(10);
  }
  for(i=0;i<=255;i++)
  {
  analogWrite(4,i);
  delay(10);
  }
  delay(1000);
  //---------------------------------------------------------------
  //                      Pattern 3
  //---------------------------------------------------------------
  for(i=0;i<6;i++)
  {
  digitalWrite(0,LOW);
  delay(200);
  digitalWrite(0,HIGH);
  delay(200);
  digitalWrite(1,LOW);
  delay(200);
  digitalWrite(1,HIGH);
  delay(200);
  digitalWrite(4,LOW);
  delay(200);
  digitalWrite(4,HIGH);
  delay(200);
  }
  delay(1000);
}