C11112331312111112111133133313331333132212111133133313331323133313231323233121   >>    C1111233131211111211113313331333133313221211113313331333132313331323132323312   <<    C11112331312111112111133133313331333132212111133133313331323133313231323233123   >>      C11112331312111112111133133313331333132212111133133313331323133313231323233122   >>