C11112331312111112111133132313331333133313233313331312111133133313332322121221   >>    C1111233131211111211113313231333133313331323331333131211113313331333232212122   <<    C11112331312111112111133132313331333133313233313331312111133133313332322121223   >>      C11112331312111112111133132313331333133313233313331312111133133313332322121222   >>