C11112331312111112111133133313331333132323213331333131121133232321   >>    C1111233131211111211113313331333133313232321333133313112113323232   <<    C11112331312111112111133133313331333132323213331333131121133232323   >>      C11112331312111112111133133313331333132323213331333131121133232322   >>