C111123313121111121111331333133313331333133313332233132313232221   >>    C11112331312111112111133133313331333133313331333223313231323222   <<    C111123313121111121111331333133313331333133313332233132313232223   >>      C111123313121111121111331333133313331333133313332233132313232222   >>