B3311331313231311331322331333132313331322331323133313311211113312121311   >>    B331133131323131133132233133313231333132233132313331331121111331212131   <<    B3311331313231311331322331333132313331322331323133313311211113312121313   >>      B3311331313231311331322331333132313331322331323133313311211113312121312   >>