3 Stalks celery; halved -crosswise 1 lg Carrot; halved crosswise 1 lg Leek; halved lenthwise and -crosswise, well rinsed 1 Bay leaf 1 Sprig fresh thyme 6 c Water 3 c Dried lentils; rinsed 1 ts Salt 3 c Chicken broth 1 1/2 lb Cotechino; or other garlic -sausage 1 tb Fresh parsley; chopped 1/2 ts Ground black pepper 2 bn Broccoli rabe; woody stems -removed 1 tb Olive oil 1 Clove garlic; finely chopped 1/2 ts Crushed red pepper