Slice bitter melon lengthwise; remove seeds and white center. Slice in 2-inch pieces. Heat oil in large pot. Saute garlic, ginger, and onions until tender. Add pork and saute until browned. Add tomatoes and bagoong alamang, and cook for 5 minutes. Add water and bring to boil. Stir in eggplant, bitter melon, okra and long beans. Simmer for 15 minutes or until tender, stirring occasionally. Salt to taste.