C111112111133131121133133313331333133313331322121111331123122321   >>    C11111211113313112113313331333133313331333132212111133112312232   <<    C111112111133131121133133313331333133313331322121111331123122323   >>      C111112111133131121133133313331333133313331322121111331123122322   >>