def METHOD_NAME() -> list[list[str]] | None:
    mnemonics = []
    if not storage_recovery.get_slip39_group_count():
        return None
    for i in range(storage_recovery.get_slip39_group_count()):
        mnemonics.append(storage_recovery_shares.fetch_group(i))
    if not any(p for p in mnemonics):
        return None
    return mnemonics