B3311331313231311331322331333132313331322331323133313311211111133121311   >>    B331133131323131133132233133313231333132233132313331331121111113312131   <<    B3311331313231311331322331333132313331322331323133313311211111133121313   >>      B3311331313231311331322331333132313331322331323133313311211111133121312   >>