arduino motor shield stepper pins

Other Hardware Motors, Mechanics, Power and CNC
1

What are the pins i need to use in declaring a instance of object of type stepper

Stepper(revs, PIN1, PIN2, PIN3, PIN4)

To what pins correspond pin1, 2, 3, 4 if i use th earduino motor shield ?

2 
#include <Stepper.h>
 
// change this to fit the number of steps per revolution
// for your motor
  const int stepsPerRevolution = 48;

 // give the motor control pins names:
 const int pwmA = 3;
 const int pwmB = 11;
 const int brakeA = 9;
 const int brakeB = 8;
 const int dirA = 12;
 const int dirB = 13;
 
 // initialize the stepper library on the motor shield
 Stepper myStepper(stepsPerRevolution, dirA,dirB);     
 
void setup() {
 Serial.begin(9600);

// set the PWM and brake pins so that the direction pins  
// can be used to control the motor:
pinMode(pwmA, OUTPUT);
 pinMode(pwmB, OUTPUT);
 pinMode(brakeA, OUTPUT);
 pinMode(brakeB, OUTPUT);
 digitalWrite(pwmA, HIGH);
 digitalWrite(pwmB, HIGH);
 digitalWrite(brakeA, LOW);
 digitalWrite(brakeB, LOW);
 
 // set the motor speed (for multiple steps only):
 myStepper.setSpeed(2);
 }