How To create Factories for manyTaMany Relationship?

i have two tables field and level

class Field extends Model
{
    use HasFactory;
    protected $fillable = [
        'name',
        'description',
    ];
    public function levels(): BelongsToMany
    {
        return $this->belongsToMany(Level::class, 'fields_levels');


    }
    
}

class Level extends Model
{
    use HasFactory;
    protected $fillable = [
        'name',
    ];
    public function fields(): BelongsToMany
    {
        return $this->belongsToMany(Field::class, 'fields_levels');
    }

    }

Migration

return new class extends Migration {
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('fields_levels', function (Blueprint $table) {
            $table->unsignedBigInteger('field_id');
            $table->foreign('field_id')
                ->references('id')
                ->on('fields')
                ->onDelete('cascade');

            $table->unsignedBigInteger('level_id');
            $table->foreign('level_id')
                ->references('id')
                ->on('levels')
                ->onDelete('cascade');

            $table->timestamps();
           
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('fields_levels');
    }
};

NB: i Have just 3 level ['1st Level', '2nd level,'3rd level'] and 4 Fields ['English' , 'French' , 'Math', 'Computer science']