C22212323232133313113313331333132313231333132311233123112322332321   >>    C2221232323213331311331333133313231323133313231123312311232233232   <<    C22212323232133313113313331333132313231333132311233123112322332323   >>      C22212323232133313113313331333132313231333132311233123112322332322   >>