for rt in (0, 21, 31):
    for ra in (0, 21, 31):
        for rb in (0, 21, 31):
            for imm in (0, 85, 170, 255):
                for suffix in ("", ".", "i", "i.", "w", "w.", "wi", "wi."):
                    print(f"grev{dot} {rt},{ra},{rb},{imm}")