C22212323232133313113313331333132313231333132311233123311121113121   >>    C2221232323213331311331333133313231323133313231123312331112111312   <<    C22212323232133313113313331333132313231333132311233123311121113123   >>      C22212323232133313113313331333132313231333132311233123311121113122   >>