C3123121111113313121111331333133313223313331333133313233313231333131122212331   >>    C312312111111331312111133133313331322331333133313331323331323133313112221233   <<    C3123121111113313121111331333133313223313331333133313233313231333131122212333   >>      C3123121111113313121111331333133313223313331333133313233313231333131122212332   >>