C11112331312111112111133133313231333132311212111133133313331221121   >>    C1111233131211111211113313331323133313231121211113313331333122112   <<    C11112331312111112111133133313231333132311212111133133313331221123   >>      C11112331312111112111133133313231333132311212111133133313331221122   >>