Display/show/list custom terms in heirarchy order - not alph

<p>111</p>
<?php
$taxonomy = 'program';
// get the term IDs assigned to post.
$post_terms = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
// separator between links
$separator = ', ';
if ( !empty( $post_terms ) && !is_wp_error( $post_terms ) ) {
    $term_ids = implode( ',' , $post_terms );
    $terms = wp_list_categories( 'title_li=&style=none&echo=0&taxonomy=' . $taxonomy . '&include=' . $term_ids );
    $terms = rtrim( trim( str_replace( '<br />',  $separator, $terms ) ), $separator );
    // display post categories
    echo  $terms;
}
?>

<p>222</p>
<?php
//list terms in a given taxonomy using wp_list_categories (also useful as a widget if using a PHP Code plugin)
$taxonomy     = 'program';
$orderby      = 'name';
$show_count   = 0;      // 1 for yes, 0 for no
$pad_counts   = 0;      // 1 for yes, 0 for no
$hierarchical = 1;      // 1 for yes, 0 for no
$title        = '';
$args = array(
  'taxonomy'     => $taxonomy,
  'orderby'      => $orderby,
  'show_count'   => $show_count,
  'pad_counts'   => $pad_counts,
  'hierarchical' => $hierarchical,
  'title_li'     => $title
);
?>
<ul>
<?php wp_list_categories( $args ); ?>
</ul>

<p>333</p>
<?php echo get_the_term_list( $post->ID, 'program', '', ', ', '' ); ?>


<p>444</p>
<?php the_terms( $post->ID, 'program', 'Program: ', ' / ' ); ?>

<p>555</p>
<?php echo '<p>';
echo get_the_term_list( $post->ID, 'program', '   ', ' &middot; ', ' ' );
echo '</p>'; ?>