C312312111111331312111133133313231333133313112331323133313331333132323211   >>    C31231211111133131211113313331323133313331311233132313331333133313232321   <<    C312312111111331312111133133313231333133313112331323133313331333132323213   >>      C312312111111331312111133133313231333133313112331323133313331333132323212   >>