*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*A1 and A2 are superset
*A1 and A2 are superset
*A1 and A2 are superset
*A1 and A2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*B1 and B2 are superset
*A1 and A2 are superset
*A1 and A2 are superset
*A1 and A2 are superset
*A1 and A2 are superset