C1231321123223331211111131211113313331333132313332313232332213233132111   >>    C123132112322333121111113121111331333133313231333231323233221323313211   <<    C1231321123223331211111131211113313331333132313332313232332213233132113   >>      C1231321123223331211111131211113313331333132313332313232332213233132112   >>