The following example suggests the work of list from stdlib. Is there an existing alternative that organizes the results filling the columns first, instead of the rows?
]test =: a.{~,(26$32,0),.(i.26)+~a. i. 'a'
ab cd ef gh ij kl mn op qr st uv wx yz
15 list test
ab cd ef
gh ij kl
mn op qr
st uv wx
yz
(B=)
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