B3311331313231311331322331333132313331322331323133313311221333132332211   >>    B331133131323131133132233133313231333132233132313331331122133313233221   <<    B3311331313231311331322331333132313331322331323133313311221333132332213   >>      B3311331313231311331322331333132313331322331323133313311221333132332212   >>