C1231321123223331211111131211113313331333132313331333323223323113233223311   >>    C123132112322333121111113121111331333133313231333133332322332311323322331   <<    C1231321123223331211111131211113313331333132313331333323223323113233223313   >>      C1231321123223331211111131211113313331333132313331333323223323113233223312   >>