1. A method of processing results of a recognition by an automatic speech recognition (ASR) system on a speech input, the results comprising a first recognition result identified by the ASR system as most likely to be a correct recognition result for the speech input, the results further comprising at least one alternative recognition result identified by the ASR system, the method comprising: determining whether the first recognition result includes a member of a set of words or phrases, each member of the set comprising a word or phrase and being associated with at least one other member of the set, and whether the at least one alternative recognition result includes any of the at least one other member associated with the member in the set; and in response to determining that the first recognition result includes the member of the set of words or phrases and that the at least one alternative recognition result includes any of the at least one other member associated with the member in the set, triggering an alert, wherein: the at least one alternative recognition result comprises a second recognition result; the member of the set is a first member of the set; the at least one other member of the set associated with the member comprises a second member of the set; the determining whether the first recognition result includes a member of the set and whether the at least one alternative recognition result includes any of the at least one other member comprises determining whether the ASR system recognized a segment of the speech input as the first member for the first recognition result and as the second member of the set for the second recognition result; the results of the recognition are arranged as a lattice; and the determining whether the ASR system recognized the segment of the speech input as the first member for the first recognition result and as the second member for the second recognition result comprises determining whether the lattice identifies the second member of the set as an alternative to the first member of the set.