B3311331313231311331322331333132313331322331323133313331333113121111123111   >>    B331133131323131133132233133313231333132233132313331333133311312111112311   <<    B3311331313231311331322331333132313331322331323133313331333113121111123113   >>      B3311331313231311331322331333132313331322331323133313331333113121111123112   >>