C123132112322333121111113121111331333133313231333133323223312122211211221123311   >>    C12313211232233312111111312111133133313331323133313332322331212221121122112331   <<    C123132112322333121111113121111331333133313231333133323223312122211211221123313   >>      C123132112322333121111113121111331333133313231333133323223312122211211221123312   >>