Avoidability Index for Binary Patterns with Reversal James Currie Philip Lafrance DOI: https://doi.org/10.37236/5483 Keywords: Combinatorics on words, Words avoiding patterns, Reversals Abstract For every pattern $p$ over the alphabet $\{x,x^R,y, y^R\}$, we specify the least $k$ such that $p$ is $k$-avoidable. PDF Published 2016-02-19 Issue Volume 23, Issue 1 (2016) Article Number P1.36
