C11112331312111112111133133313331333132322121111331323312113313231323233121   >>    C1111233131211111211113313331333133313232212111133132331211331323132323312   <<    C11112331312111112111133133313331333132322121111331323312113313231323233123   >>      C11112331312111112111133133313331333132322121111331323312113313231323233122   >>