C11112331312111112111133133313331333133313223223313112113313111221   >>    C1111233131211111211113313331333133313331322322331311211331311122   <<    C11112331312111112111133133313331333133313223223313112113313111223   >>      C11112331312111112111133133313331333133313223223313112113313111222   >>