C31231211113313121211113313331333133313311211331333133313113213331313221   >>    C3123121111331312121111331333133313331331121133133313331311321333131322   <<    C31231211113313121211113313331333133313311211331333133313113213331313223   >>      C31231211113313121211113313331333133313311211331333133313113213331313222   >>