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Bulatov, A.A., Karpova, O., Shur, A.M. and Startsev, K. 2017. Lower Bounds on Words Separation: Are There Short Identities in Transformation Semigroups?. The Electronic Journal of Combinatorics. 24, 3 (Aug. 2017), P3.35. DOI:https://doi.org/10.37236/6450.