<?php $args = array('tax_query' => array(array('taxonomy' => 'post-status','field' => 'slug','terms' => array ('post-status-published')))); $query = new WP_Query( $args );?>
    <?php if ( $query->have_posts() ) : $duplicates = []; while ( $query->have_posts() ) : $query->the_post(); ?>

        <?php if ( in_category( 'first-major' ) ) : ?>
        	<div class="major"><div class="major-first">
            major and first - <?php the_title();?><br>
            <?php $duplicates[] = get_the_ID(); ?>
</div>
	<?php endif; endwhile; ?>
	<?php $query->rewind_posts(); ?>

	    <?php while ( $query->have_posts() ) : $query->the_post(); ?>

        <?php if (( in_category( 'major' ) ) && (!in_category( 'first-major'))) : if ( in_array( get_the_ID(), $duplicates ) ) continue; ?>
            major - <?php the_title(); ?><br>
            <?php $duplicates[] = get_the_ID(); ?>
        <?php endif;?>

    <?php endwhile; ?></div>
    <?php $query->rewind_posts(); ?>

	<?php while ( $query->have_posts() ) : $query->the_post(); ?>

        <?php if (( in_category( 'major' ) ) && (!in_category( 'first-major'))) : if ( in_array( get_the_ID(), $duplicates ) ) continue; ?>
            major - <?php the_title(); ?><br>
            <?php $duplicates[] = get_the_ID(); ?>
        <?php endif;?>

    <?php endwhile; ?></div>
    <?php $query->rewind_posts(); ?>

    <?php while ( $query->have_posts() ) : $query->the_post(); ?>

		<?php if ( in_category('group-a')) :?>
			yes
		<?php else :?>
			no
		<?php endif;?>
        <?php if ( in_category( 'group-a-first' ) ) : ?>
            group a and first - <?php the_title(); ?><br>
            <?php $duplicates[] = get_the_ID(); ?>
        <?php endif;?>

    <?php endwhile; ?>
    <?php $query->rewind_posts(); ?>

    <?php while ( $query->have_posts() ) : $query->the_post(); ?>

       <?php if (( in_category( 'group-a' ) ) && (!in_category( 'group-a-first'))) : if ( in_array( get_the_ID(), $duplicates ) ) continue; ?>
            group a - <?php the_title(); ?><br>
            <?php $duplicates[] = get_the_ID(); ?>
        <?php endif;?>

    <?php endwhile; ?>
    <?php $query->rewind_posts(); ?>

    <?php while ( $query->have_posts() ) : $query->the_post(); ?>

        <?php if ( in_category( 'group-b-first' ) ) : ?>
            group b and first - <?php the_title(); ?><br>
            <?php $duplicates[] = get_the_ID(); ?>
        <?php endif;?>

    <?php endwhile; ?>
    <?php $query->rewind_posts(); ?>

	<?php while ( $query->have_posts() ) : $query->the_post(); ?>

        <?php if ( in_array( get_the_ID(), $duplicates ) ) continue; ?>
            <?php the_title();?><br>

    <?php endwhile; wp_reset_postdata(); endif; ?>


</section>