How to find the answer for v, w, x, y, z?

The demand for subassembly S is 150 units in week 7. Each unit of S requires 2 units ofT and 2 units of U. Each unit ofT requires 1 unit of V, 1 unit of W, and 2 units of X. Finally, each unit of U requires 1 unit on and 3 units of 2. One rm manufactures all items. It takes 2 weeks to make 8, 1 week to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, 2 weeks to make Y, and 1 week to make Z. K Click the icon to view the product structure and the time-phased product structure. g Click the icon to view the on-hand inventory. Construct a net material requirements plan using onhand inventory (enter your responses as whole numbers). Week Lead Time Item 1 2 3 4 5 6 7 (weeks) 8 Gross req 150 On hand 20 Net req 130 2 Order receipt 130 Order release 130 T Gross req 260 On hand 20 Net req 240 1 Order receipt 240 Order release 240 U Gross req 260 On hand 30 Mn rnn O'In