C312312111133131212111133133313231333133313331322121111332313221   >>    C31231211113313121211113313331323133313331333132212111133231322   <<    C312312111133131212111133133313231333133313331322121111332313223   >>      C312312111133131212111133133313231333133313331322121111332313222   >>