WORDS is a biannual international conference devoted to combinatorics on words (sequences of symbols) and its links to algorithms, algebra, dynamics and number theory, as well as its applications. The foundations of combinatorics on words lie in the pioneering work of Axel Thue in the early 20th century, it is now established as an area that lies at the intersection of discrete mathematics and theoretical computer science. The main objects are avoidable or unavoidable regularities in finite and infinite words,…