LM293D motor driver circuit using Arduino UNO

Program:

//L293D #Rajasingh
//Motor A
const int motorPin1  = 2;  // Pin 14 of L293
const int motorPin2  = 3;  // Pin 10 of L293
//Motor B
const int motorPin3  = 4; // Pin  7 of L293
const int motorPin4  = 5;  // Pin  2 of L293

void setup()
{
    //Set pins as outputs
    pinMode(motorPin1, OUTPUT);
    pinMode(motorPin2, OUTPUT);
    pinMode(motorPin3, OUTPUT);
    pinMode(motorPin4, OUTPUT);
}
void loop()
{
    //This code  will turn Motor A clockwise for 2 sec.
    digitalWrite(motorPin1, HIGH);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(1200);
    //This code will turn Motor A counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, HIGH);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(1200);
   
    //This code will turn Motor B clockwise for 2 sec.
    digitalWrite(motorPin1, HIGH);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, HIGH);
    digitalWrite(motorPin4, LOW);
    delay(100);
    //This code will turn Motor B counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, HIGH);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, HIGH);
    delay(100);  
   
   
}