C11112331312111112111133133313231333132311212111133133313331122112323211   >>    C1111233131211111211113313331323133313231121211113313331333112211232321   <<    C11112331312111112111133133313231333132311212111133133313331122112323213   >>      C11112331312111112111133133313231333132311212111133133313331122112323212   >>