Assigning two items together from an array Objectscript/Mumps

Assigning two items together from an array Objectscript/Mumps

Just wanted to ask whether there was a way to put together two items so
for instance if I was generating 4 random shopping lists from a large list
of 20 items which are all stored in my global(array) if I could divide
this by 4 and randomly put together 4 smaller lists I know In c# I could
possibly use the 'random' library is there anything similar to this in
Mumps objectscript?