A company has provided a sales budget for its first five months (January, February, March, April, and May) of operations. The companys has a policy that each month's ending inventory of finished product must equal exactly 5,000 units. The direct materials purchases budget is based on the production budget. The company's policy for each month's ending inventory of raw materials is that it should equal 15% of the next month's production needs for raw materials. Given this information, the company can prepare raw materials purchases budgets for how many months?