C312312111133131212111133133313231333133313331333131111331323223231   >>    C31231211113313121211113313331323133313331333133313111133132322323   <<    C312312111133131212111133133313231333133313331333131111331323223233   >>      C312312111133131212111133133313231333133313331333131111331323223232   >>