SOS with "for" loop

/* Create a sketch to make the lilymini blink an SOS then repeat. 
 *  This version uses the "for" loop to shorten the code. The syntax for the "for" loop uses an initialization, 
 *  condition and increment to manage how many times the loop is carried out. It also requires
 *  a brace "{" at the beginning and } at the end. The sketch below uses the blue on the RGB to 
 *  denote when the larger loop completes.
 *  
 */

int A = 3;
int B = 4;
int c = 7;
int short_pause = 300; //short pause for dot
int long_pause = 800; //longer pause for dash

void setup() {
  // put your setup code here, to run once:
  pinMode (A, OUTPUT);
  pinMode (B, OUTPUT);
  pinMode (c, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 for (int x = 0; x < 3; x++) {
  digitalWrite (A, HIGH);
  digitalWrite (B, HIGH);
  delay (short_pause);
  digitalWrite (A, LOW);
  digitalWrite (B, LOW);
  delay (short_pause);
 }
 delay (500);
 
 for (int x = 0; x < 3; x++) {
  digitalWrite (A, HIGH);
  digitalWrite (B, HIGH);
  delay (long_pause);
  digitalWrite (A, LOW);
  digitalWrite (B, LOW);
  delay (long_pause);
 }
 delay (500);
 
 for (int x = 0; x < 3; x++) {
  digitalWrite (A, HIGH);
  digitalWrite (B, HIGH);
  delay (short_pause);
  digitalWrite (A, LOW);
  digitalWrite (B, LOW);
  delay (short_pause);
 }
  delay (long_pause);
  
  digitalWrite (c, HIGH);
  delay (short_pause);
  digitalWrite (c, LOW);
  delay (short_pause);

  delay (long_pause);
}