C312312111133131212111133133313331333133112113313331333131132132211   >>    C31231211113313121211113313331333133313311211331333133313113213221   <<    C312312111133131212111133133313331333133112113313331333131132132213   >>      C312312111133131212111133133313331333133112113313331333131132132212   >>