B3311331313231311331322331333132313331322331323133313311221333132321311211311   >>    B331133131323131133132233133313231333132233132313331331122133313232131121131   <<    B3311331313231311331322331333132313331322331323133313311221333132321311211313   >>      B3311331313231311331322331333132313331322331323133313311221333132321311211312   >>