B3311331313231311331322331333132313233313231333131133132333131333132322233221   >>    B331133131323131133132233133313231323331323133313113313233313133313232223322   <<    B3311331313231311331322331333132313233313231333131133132333131333132322233223   >>      B3311331313231311331322331333132313233313231333131133132333131333132322233222   >>