C11112331312111112111133133313331333132313233313331333132333133322233313122321   >>    C1111233131211111211113313331333133313231323331333133313233313332223331312232   <<    C11112331312111112111133133313331333132313233313331333132333133322233313122323   >>      C11112331312111112111133133313331333132313233313331333132333133322233313122322   >>