Lamb sish kebab

1 lb cubed leg of lamb
1 yellow squash
1 medium onion
1/2 of an  oz package mushroom
1 red pepper
1/2 green pepper
1/4 C olive oil
2 tbsp vinegar
1 tsp dried rosemary
1 tsp dried oregano
salt and pepper

In a large bowl, mix oil, vinegar, rosemary and oregano. Add lamb, onion and mushroom. Marinade for 24 hours. Add all ingredients on skewers and grill.