The demand for subassembly $S$ is $130$ units in week $7.$ Each unit of $S$ requires $2$ units of $T$ and $1$ unit of U$.$ Each

unit of T requires $1$ unit of $V,2$ units of $W,$ and $2$ units of $x.$ Finally, each unit of $U$ requires $1$ unit of $Y$ and $2$ 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 $Z.$

${?}^1$ Click the icon to view the product structure and the time$-$phased product structure.

${?}^2$ 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$).$