13. The product structure tree for a lawn sprinkler (part S) is shown below. The number of an item required to make one unit of the item above it is indicated in front of the letter representing an item. The lead time required to purchase an item or to produce it from the component(s) at the next lower level is indicated in parentheses following each item. The company uses lot-for-lot ordering and plans to complete 1,750 sprinklers in week 6 and 1,200 in week 8. No other requirements for the sprinkler or its components are planned within this lead time. The on-hand balance and scheduled receipts values for parts T, U, and Vare given in the table below the product structure tree. Construct time-phased inventory records for parts T, U, and V.

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S (1 wk.) 27(1 wk.) W(1 wk.) 1X (2 wks.) 2U (1 wk.) 6V (2 wks.) Item On Hand T 920 U 739 V 1,325 Scheduled Receipts 0 2,100 in week 2 10,000 in week 2 1Y (1 wk.)