Put ham hock in deep pot with chicken bouillon and beef bouillon and simmer covered for an hour. While hock is simmering, heat oil in heavy stew pot and brown chicken and beef. Remove from pot and reserve. Saute onions and garlic for a few minutes. Add tomatoes, tomato paste, chilies, salt and cayenne. Stir and cook for 5 minutes. When ham hock is tender, remove it from bouillon, discard skin and bones and return pieces of ham to bouillon. Add bouillon, ham and beef to stew and simmer covered for an hour. Add chicken and simmer covered for another 15 minutes. Add rice. Stir well. Cover and simmer for another 20 minutes or until rice is cooked and chicken tender. Let stand for 15 minutes before serving so rice will absorb the liquid. Prepare cabbage and eggplant and pumpkin by boiling or steaming and serve as side dishes.