C313212111133131211331333133313331333133313231333133313331333121111331322112121   >>    C31321211113313121133133313331333133313331323133313331333133312111133132211212   <<    C313212111133131211331333133313331333133313231333133313331333121111331322112123   >>      C313212111133131211331333133313331333133313231333133313331333121111331322112122   >>