C22212323232133313113313331333132313331323231323323232113121111   >>    C2221232323213331311331333133313231333132323132332323211312111   <<    C22212323232133313113313331333132313331323231323323232113121113   >>      C22212323232133313113313331333132313331323231323323232113121112   >>