C11112331312111112111133133313231333132313232233133313123231333132323321   >>    C1111233131211111211113313331323133313231323223313331312323133313232332   <<    C11112331312111112111133133313231333132313232233133313123231333132323323   >>      C11112331312111112111133133313231333132313232233133313123231333132323322   >>