C22212323232133313113313331333133313231323231311211221133232211   >>    C2221232323213331311331333133313331323132323131121122113323221   <<    C22212323232133313113313331333133313231323231311211221133232213   >>      C22212323232133313113313331333133313231323231311211221133232212   >>