C11112331312111112111133133313331333133313331123313231323223311   >>    C1111233131211111211113313331333133313331333112331323132322331   <<    C11112331312111112111133133313331333133313331123313231323223313   >>      C11112331312111112111133133313331333133313331123313231323223312   >>