multidimensional array in velocity template

This is just an array of string arrays, you can iterate $list and then iterate each item in list.

i tried to use $item1[$index] is giving error as System.Collections.ArrayList[0], is there any way we can access array value by index

string arrays are enumerable, you don't need to(but in either case I believe it is Array.get_Item(i)). 

#foreach($subArray in $mainArray)
    #foreach($item in $subArray)
        ...
    #end
#end

Thanks