PWM for 3-phase Inverter

this is my code that i used

 float port1 = 11;
 float port2 = 10;
 float port3 = 9;
 int f = 50;

void setup() {
Serial.begin(9600);
pinMode(port1, OUTPUT);
pinMode(port2, OUTPUT);
pinMode(port3, OUTPUT);

}

void loop() {
  //sesi 1
  digitalWrite(port1, HIGH);
  digitalWrite(port2, LOW);
  digitalWrite(port3, HIGH);
  Serial.println("1 0 1");
  delay(1/(6*f));
  
  //sesi 2
  digitalWrite(port1, HIGH);
  digitalWrite(port2, LOW);
  digitalWrite(port3, LOW);
  Serial.println("1 0 0");
  delay(1/(6*f));
  
  //sesi 3
  digitalWrite(port1, HIGH);
  digitalWrite(port2, HIGH);
  digitalWrite(port3, LOW);
  Serial.println("1 1 0");
  delay(1/(6*f));
  
   //sesi 4
  digitalWrite(port1, LOW);
  digitalWrite(port2, HIGH);
  digitalWrite(port3, LOW);
  Serial.println("0 1 0");
  delay(1/(6*f));
  
   //sesi 5
  digitalWrite(port1, LOW);
  digitalWrite(port2, HIGH);
  digitalWrite(port3, HIGH);
  Serial.println("0 1 1");
  delay(1/(6*f));
  
   //sesi 6
  digitalWrite(port1, LOW);
  digitalWrite(port2, LOW);
  digitalWrite(port3, HIGH);
  Serial.println("0 0 1");
  delay(1/(6*f));
  
}