Given positive integers n, and p1, ..., pr, we establish a fast word combinatorial algorithm for constructing a word w = w1 ⋯ wn of length n, with periods p1, ..., pr, and on the maximal number of distinct letters. Moreover, we show that the constructed word, which is unique up to word isomorphism, is a pseudo-palindrome - i.e. it is a fixed point of an involutory antimorphism. © 2009 Elsevier B.V. All rights reserved.
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