C111123313121111121111331333133313331333131233133313311213322331323221211   >>    C11112331312111112111133133313331333133313123313331331121332233132322121   <<    C111123313121111121111331333133313331333131233133313311213322331323221213   >>      C111123313121111121111331333133313331333131233133313311213322331323221212   >>