The demand for subassembly S is $140$ units in week $7.$ Each unit of S requires $1$ unitnothing of T and $2$ unitss of U$.$ Each unit of T requires $1$ unitnothing of$$ V$,1$ unitnothing of$$ W$,$ and $1$ unitnothing of X$.$ Finally, each unit of U requires $2$ unitss of Y and $3$ units of Z$.$ One firm manufactures all ite weekss to make$$ V$,3$ weeks to make$$ W$,1$ weeknothing to make$$ X$,2$ weeks to make$$ Y$,$ and $1$ weeknothing to make Z$.$

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Construct a net material requirements plan using$$ on$-$hand inventory $($enter your responses as whole numbers$).$

Week

Lead Time

Item

$1$

$2$

$3$

$4$

$5$

$6$

$7$