only one dc motor spins

Other Hardware Motors, Mechanics, Power and CNC
16 
//L293D
//Motor A
const int motorPin1  = 5;  // Pin 14 of L293
const int motorPin2  = 6;  // Pin 10 of L293
//Motor B
const int motorPin3  = 10; // Pin  7 of L293
const int motorPin4  = 9;  // Pin  2 of L293

//This will run only one time.
void setup(){
 
    //Set pins as outputs
    pinMode(motorPin1, OUTPUT);
    pinMode(motorPin2, OUTPUT);
    pinMode(motorPin3, OUTPUT);
    pinMode(motorPin4, OUTPUT);
    
    //Motor Control - Motor A: motorPin1,motorpin2 & Motor B: motorpin3,motorpin4

    //This code  will turn Motor A clockwise for 2 sec.
    digitalWrite(motorPin1, HIGH);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(10000); 
    //This code will turn Motor A counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, HIGH);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(10000);
    
    //This code will turn Motor B clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, HIGH);
    digitalWrite(motorPin4, LOW);
    delay(10000); 
    //This code will turn Motor B counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, HIGH);
    delay(10000);    
    
    //And this code will stop motors
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
  
}


void loop(){
  

}

that is the code that I am using for the DC motors, and yes, I am using a bare L293D chip, not a motor driver board.