B3311331313231311331322331333132322331311113313231323223313221211   >>    B331133131323131133132233133313232233131111331323132322331322121   <<    B3311331313231311331322331333132322331311113313231323223313221213   >>      B3311331313231311331322331333132322331311113313231323223313221212   >>