code: def _gate_indices(circuit_matched, circuit_blocked):
      """Function which returns the list of gates that are not matched and not blocked for the first scenario.
      Returns:
          list(int): list of gate id.
      """
      gate_indices = []
  
      for i, (matched, blocked) in enumerate(
          zip(circuit_matched, circuit_blocked)
      ):
          if (not matched) and (not blocked):
              gate_indices.append(i)
      gate_indices.reverse()
      return gate_indices
  
imports: import copy
  import itertools
  from collections import OrderedDict
  from typing import Sequence, Callable
  import numpy
  import pennylane
  from pennylane.transforms import transform
  from pennylane import adjoint
  from pennylane.ops.qubit.attributes import symmetric_over_all_wires
  from pennylane.tape import QuantumTape, QuantumScript
  from pennylane.transforms.commutation_dag import commutation_dag
  from pennylane.wires import Wires
label_desc: Use image node_id 10 for calling a global function with example usage: _gate_indices(circuit_matched, circuit_blocked) and returns: gate_indices