gap between clones

hi

in my code there is already set positions of instantiated object brick but i need gap between clones of brick see the attached imagealt text

here is my code

var brick : GameObject;
function Start () {
for (var i = 0; i < Random.Range(2,4); i++){
  var object = Instantiate(brick, Vector3(transform.position.x,-1.23,transform.position.z),Quaternion.identity);
  object.transform.parent = transform;
  }
}

var brick : GameObject;
var gap : float = 1.5;
function Start () {
for (var i = 0; i < Random.Range(2,4); i++)
{
var object = Instantiate(brick, vector3(transform.position.x+gap*i,-1.23,transform.position.z),Quaternion.identity);

  }
}