C11111211113313112113313331333133313221333133313113313132332323321   >>    C1111121111331311211331333133313331322133313331311331313233232332   <<    C11111211113313112113313331333133313221333133313113313132332323323   >>      C11111211113313112113313331333133313221333133313113313132332323322   >>