C1231321123223331211111131211113313331333132313331333232233121222113311231   >>    C123132112322333121111113121111331333133313231333133323223312122211331123   <<    C1231321123223331211111131211113313331333132313331333232233121222113311233   >>      C1231321123223331211111131211113313331333132313331333232233121222113311232   >>