B3311331313231311331322331333132313231333131323223313113313231323231211   >>    B331133131323131133132233133313231323133313132322331311331323132323121   <<    B3311331313231311331322331333132313231333131323223313113313231323231213   >>      B3311331313231311331322331333132313231333131323223313113313231323231212   >>