C11112331312111112111133133313331333132311211332123313331333222233131   >>    C1111233131211111211113313331333133313231121133212331333133322223313   <<    C11112331312111112111133133313331333132311211332123313331333222233133   >>      C11112331312111112111133133313331333132311211332123313331333222233132   >>