Bean Soup with parmigiano

1/4 cup baby lima beans * 1/4 cup white beans 1/4 cup black beans 1/4 cup chickpeas (garbanzo beans) 1/4 cup pink beans * 1/4 cup kidney beans 1 teaspoon salt[...]

2 cups pinto beans dried 4 cups beef stock prefer veal stock if possible 6 cups water 6 tablespoons olive oil 2 slices prosciutto rind or salt pork * 1 each[...]