C11111211113313112113313331333133313221333133313113313332213232311   >>    C1111121111331311211331333133313331322133313331311331333221323231   <<    C11111211113313112113313331333133313221333133313113313332213232313   >>      C11111211113313112113313331333133313221333133313113313332213232312   >>