>>> from comandes import productes_no_demanats

>>> productes_no_demanats(["Anna Garcia Lopez", ["X34-Z1", "A12-B3", "C99-Q7"], [2, 0, 0], "12/06/2024"])
[('A12-B3', 'G'), ('C99-Q7', 'G')]

>>> productes_no_demanats(["Joan Torres Vila", ["P00-X", "Q11-Y"], [1, 0], "01/01/2025"])
[('Q11-Y', 'T')]

>>> productes_no_demanats(["Maria Perez Sanchez", ["A1", "B2", "C3"], [0, 0, 0], "15/03/2023"])
[('A1', 'P'), ('B2', 'P'), ('C3', 'P')]

>>> productes_no_demanats(["Marc Soler Vidal", ["A1"], [5], "10/05/2023"])
[]

>>> productes_no_demanats(["Laura Ruiz Gomez", ["Z9", "Y8"], [0, 2], "07/07/2024"])
[('Z9', 'R')]