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Previous experimental searches by means of proton knockout on $^{26}$F produced no evidence for such excitations.\n  We search for excited states in $^{25}$O using the ${ {}^{24}\\text{O} (d,p) {}^{25}\\text{O} }$ reaction. The theoretical analysis of excited states in unbound $^{25,27}$O is based on the configuration interaction approach that accounts for couplings to the scattering continuum.\n  We use invariant-mass spectroscopy to measure neutron-unbound states in $^{25}$O. 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