C1231321123223331211111131211113313331333132313331333232233121222123211322331   >>    C123132112322333121111113121111331333133313231333133323223312122212321132233   <<    C1231321123223331211111131211113313331333132313331333232233121222123211322333   >>      C1231321123223331211111131211113313331333132313331333232233121222123211322332   >>