B3311331313231311331322331333132313331322331323133313232233131333133313121211   >>    B331133131323131133132233133313231333132233132313331323223313133313331312121   <<    B3311331313231311331322331333132313331322331323133313232233131333133313121213   >>      B3311331313231311331322331333132313331322331323133313232233131333133313121212   >>