C11112331312111112111133133313331333132311211332123313331323223313111111   >>    C1111233131211111211113313331333133313231121133212331333132322331311111   <<    C11112331312111112111133133313331333132311211332123313331323223313111113   >>      C11112331312111112111133133313331333132311211332123313331323223313111112   >>