C11112331312111112111133133313331333133313123313331323311113313332211   >>    C1111233131211111211113313331333133313331312331333132331111331333221   <<    C11112331312111112111133133313331333133313123313331323311113313332213   >>      C11112331312111112111133133313331333133313123313331323311113313332212   >>