B3311331313231311331322331333132313232233223313231311331323131232211   >>    B331133131323131133132233133313231323223322331323131133132313123221   <<    B3311331313231311331322331333132313232233223313231311331323131232213   >>      B3311331313231311331322331333132313232233223313231311331323131232212   >>