C11112331312111112111133133313231333132313232233133313232331231121   >>    C1111233131211111211113313331323133313231323223313331323233123112   <<    C11112331312111112111133133313231333132313232233133313232331231123   >>      C11112331312111112111133133313231333132313232233133313232331231122   >>