C11111211113313112113313331333133313221333133313113313331213321221   >>    C1111121111331311211331333133313331322133313331311331333121332122   <<    C11111211113313112113313331333133313221333133313113313331213321223   >>      C11111211113313112113313331333133313221333133313113313331213321222   >>