B3311331313231311331322331333132313331322331323133313331322333121211111   >>    B331133131323131133132233133313231333132233132313331333132233312121111   <<    B3311331313231311331322331333132313331322331323133313331322333121211113   >>      B3311331313231311331322331333132313331322331323133313331322333121211112   >>