C11111211113313112113313331333133313133313232233133313113313112221322321   >>    C1111121111331311211331333133313331313331323223313331311331311222132232   <<    C11111211113313112113313331333133313133313232233133313113313112221322323   >>      C11111211113313112113313331333133313133313232233133313113313112221322322   >>