C22212323232133313113313331333132313231333132311233123132322121111   >>    C2221232323213331311331333133313231323133313231123312313232212111   <<    C22212323232133313113313331333132313231333132311233123132322121113   >>      C22212323232133313113313331333132313231333132311233123132322121112   >>