C312312111133131212111133133313231333133313331333112331323312231   >>    C31231211113313121211113313331323133313331333133311233132331223   <<    C312312111133131212111133133313231333133313331333112331323312233   >>      C312312111133131212111133133313231333133313331333112331323312232   >>