Can someone verify if this is correct so far and please fill in the blanks

The product structure. The time-phased product structure. Level 0 V w S T Q X T(1) U (2) 1 S Y z! C 2 V (2) W(2) X(2) Y(1) Z3) 1 6 7 3 4 5 Time in weeks Item S T U V On-Hand Inventory 20 20 40 30 Item W Y z On-Hand Inventory 30 25 100 40 The demand for subassembly S is 90 units in week 7. Each unit of S requires 1 unit of T and 2 units of U. Each unit of T requires 2 units of V, 2 units of W, and 2 units of X. Finally, each unit of U requires 1 unit of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 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. Click the icon to view the product structure and the time-phased product structure. e Click the icon to view the on-hand inventory Construct a net material requirements plan using on-hand inventory (enter your responses as whole numbers) Week 4 Lead Time (weeks) Item 1 2 3 5 6 7 S Gross req On hand 90 0 70 Net req 2 Order receipt 70 Order release T Gross req On hand 70 70 0 50 50 Net req Order receipt Order release 50 Gross req On hand 140 0 100 100 Net req 2 Order receipt Order release 100 V Gross req On hand 2 Net req Order receipt Order release W Gross req 100 On hand 0 Net req 70 3 0 Order receipt Order release 30 X Gross req 100 On hand 0 75 0 1 Net req Order receipt Order release Gross req On hand Y 75 100 0 Net red 0 2 0 Z Order receipt Order release Gross req On hand Net reg Order receipt Order release 1