$3.$ Write an LC$-3$ program that flattens a $3$x$3$ area centred underneath the player.

a$)$ Place your code in the assembly file $$terraform$.$asm$.$

b$)$ Let h denote the height of the land at the $($x$,$ z$)$ location of the player. The height of the $3$x$3$ area centred underneath the player should be levelled so that it all has a height of h$.$

c$)$ Locations with a land height of less than h should be built up to the required height by

placing cobblestone blocks $($block ID #$4).$ Be careful not to replace any blocks unnecessarily; only air blocks should be replaced with cobblestone.

d$)$ Locations with a land height of more than h should be cut down to the required height by replacing non$-$air blocks with air blocks $($block ID #$0).$

e$)$ For the purposes of this problem, land height is defined as the y$-$position of the highest nonair block at the given x$,$z coordinates.

f$)$ See Figure $2$ for a visual explanation $($note the filled blocks should be cobblestone, not dirt$)$

Please give me the exact code needed for this specific problem.