C313212111133131211331333133313331333133313231333133313331211113313113313223311   >>    C31321211113313121133133313331333133313331323133313331333121111331311331322331   <<    C313212111133131211331333133313331333133313231333133313331211113313113313223313   >>      C313212111133131211331333133313331333133313231333133313331211113313113313223312   >>