B3311331313231311331322331333131133132311233132313331333132322233231323221   >>    B331133131323131133132233133313113313231123313231333133313232223323132322   <<    B3311331313231311331322331333131133132311233132313331333132322233231323223   >>      B3311331313231311331322331333131133132311233132313331333132322233231323222   >>