C1231321123223331211111131211113313331333132313332323232213233111   >>    C123132112322333121111113121111331333133313231333232323221323311   <<    C1231321123223331211111131211113313331333132313332323232213233113   >>      C1231321123223331211111131211113313331333132313332323232213233112   >>