C22212323232133313113313331333133313231323231311211221113212311   >>    C2221232323213331311331333133313331323132323131121122111321231   <<    C22212323232133313113313331333133313231323231311211221113212313   >>      C22212323232133313113313331333133313231323231311211221113212312   >>