The demand for subassembly $S$ is $140$ units in week $7.$ Each unit of $S$ requires $2$ units of T and $2$ units of $U.$ Each unit of $T$ requires $2$ units of $V,2$ units of $W,$ and $1$ unit of $x.$ Finally, each unit of $U$ requires $2$ units 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 $U,1$ week to make $V,3$ weeks to make $W,2$ weeks to make $x,2$ weeks to make $Y,$ and $2$ weeks to make $Z.$

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Construct a gross material requirements plan $($type $0$ if the input box is not used$).$

$\backslash$table$[[$Item$,$Week,Lead Time $($weeks$)],[1,2,3,4,5,6,7],[$S Gross req,,,,,,,,$],[$Order release,,,,,,,,$2],[$T Gross req,,,,,,,,$],[$Order release,,,,,,,,$1],[$u Gross req,,,,,,,,$],[$Order release,,,,,,,,$2],[$v Gross req,,,,,,,,$],[$Order release,,,,,,,,$1],[$W Gross req,,,,,,,,$],[$Order release,,,,,,,,$3],[$X Gross req,,,,,,,,$],[$Order release,,,,,,,,$2],[$Y Gross req,,,,,,,,$],[$Order release,,,,,,,,$2],[$z Gross req,,,,,,,,$*],[$Order release,,,,,,,,$-2]]$