B3311331313231311331322331333132313331322331323133313311213123111   >>    B331133131323131133132233133313231333132233132313331331121312311   <<    B3311331313231311331322331333132313331322331323133313311213123113   >>      B3311331313231311331322331333132313331322331323133313311213123112   >>