C111123313121111121111331333133313331333133313331333133313231312311211   >>    C11112331312111112111133133313331333133313331333133313331323131231121   <<    C111123313121111121111331333133313331333133313331333133313231312311213   >>      C111123313121111121111331333133313331333133313331333133313231312311212   >>