concating string arrays

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

#define MAX 1024
int main()  {
  int i =0;
  char env[][MAX] = {"one", "two", "three" };
  char **newenv = NULL;

  char add[][MAX] = {"four","5", "6"};

  newenv = (char**) calloc( sizeof(char), 3*MAX);
  for( i=0; i < 3; i++ )  {
    newenv[i] = (char *) malloc(MAX * sizeof(char));
    strcpy(newenv[i], env[i]);
  }
  for( i=3; i < 6; i++ )  {
    newenv[i] = (char *) malloc(MAX * sizeof(char));
    strcpy(newenv[i], add[i-3]);
  }
  for( i=0; i < 6; i++ )  {
    printf("New array has %s\n", newenv[i]);
  }


  return 0;
}