Shrimp and Sausage Jambalaya

Name: Shrimp and Sausage Jambalaya
Ingredients: 1-1/2 cups rice rinsed; 2-3 smoked sausages I used hot & spicy smoked sausages; 1/3 cup bacon bits; 1 small yellow onion diced; 1 med carrot diced; 1/2 cup diced celery; 1/2 green pepper diced; 1 large tomato seeded and diced; 3-4 cloves garlic minced; 1/4 tsp cayenne or to taste; 1/3 tsp dried oregano; 1/4 tsp dried thyme; 1-1/2 tbsp tomato paste; 3 cups chicken stock; 1 bay leaf; 4 dashes of tobasco sauce or to taste; Salt and pepper to taste; 1/4 cup spring onion chopped & divided; 1/4 cup parsley chopped; 2 tbsp lemon juice; 10 large shrimps cleaned and shelled; 1 tbsp oil; 1 tbsp butter