black bean and corn soup

2 C black beans, soaked 24 hours
2 C frozen, fresh, or canned corn
1 pkg taco seasoning
2 TBS oil
1/2 tsp ground pepper
3 tsp salt

drain beans, and cover with fresh water by 1 inch. cook in crock pot on low for 12 hours, or simmer on stove for 2 hours. add remaining ingredients and simmer. serve with tortilla chips