B3311331313231311331322331333132313231313133313331333132313232213221   >>    B331133131323131133132233133313231323131313331333133313231323221322   <<    B3311331313231311331322331333132313231313133313331333132313232213223   >>      B3311331313231311331322331333132313231313133313331333132313232213222   >>