C111123313121111121111331333133313331323221211113313231232323311   >>    C11112331312111112111133133313331333132322121111331323123232331   <<    C111123313121111121111331333133313331323221211113313231232323313   >>      C111123313121111121111331333133313331323221211113313231232323312   >>