User blog:841 Avenue/Pete's Finite Arrays Preview II

This takes longer than I thought it would.

Anyway here's the preview

{100,2}

{3,3,3,3,/5}

{5,7,8,6[2][2]3,3}

{4,4,3[/10]10}

{3,3/3,3/3,3}

{3,3,4,[//5,5]10,2,3}

{3[/5,5[1][1]25,5]10,3,10}

{3,3,3[~,~,1,2]9}

{U,U}