C1231321123223331211111131211113313331333132313331333222133121213233223311   >>    C123132112322333121111113121111331333133313231333133322213312121323322331   <<    C1231321123223331211111131211113313331333132313331333222133121213233223313   >>      C1231321123223331211111131211113313331333132313331333222133121213233223312   >>