def two_qubit_gate_next_symbol_list(n: int) -> list[sympy.Symbol]:
            """Returns symbols for 2 qubit gate parameterization."""
            sid = next(two_qubit_gate_sid)
            symbols: list[sympy.Symbol] = [sympy.Symbol(f"s{sid}_{sub}") for sub in range(n)]
            return symbols
Returns symbols for 2 qubit gate parameterization.
cirq-core/cirq/transformers/gauge_compiling/gauge_compiling.py