C22212323232133313113313331333132313231333132311233123132331321   >>    C2221232323213331311331333133313231323133313231123312313233132   <<    C22212323232133313113313331333132313231333132311233123132331323   >>      C22212323232133313113313331333132313231333132311233123132331322   >>