B33113313132313113313223313331323131323133313232233133313231211   >>    B3311331313231311331322331333132313132313331323223313331323121   <<    B33113313132313113313223313331323131323133313232233133313231213   >>      B33113313132313113313223313331323131323133313232233133313231212   >>