Problem Statement

Comma quibbling is a task originally set by Eric Lippert in his blog.

Write a function to generate a string output which is the concatenation of input words from a list/sequence where:

Test your function with the following series of inputs showing your output here on this page:

Note: Assume words are non-empty strings of uppercase characters for this task.

Let's start with the solution:

quibble ← 1⌽'}{',(∊⊢,¨2↓(' and ' ''),⍨(⊂', ')⍴⍨⍴)