C312312111133131212111133133313231333133313331322121111331333131122233221   >>    C31231211113313121211113313331323133313331333132212111133133313112223322   <<    C312312111133131212111133133313231333133313331322121111331333131122233223   >>      C312312111133131212111133133313231333133313331322121111331333131122233222   >>