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Experiments on connected-digit recognition show that when using explicit duration constraints the decoder generates word matches with more reasonable durations , and word error rates are significantly reduced across a broad range of noise conditions .
 used for: connected-digit recognition, decoder; used for: duration constraints, decoder; used for: decoder, word matches
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  connected-digit recognition, decoder; duration constraints, decoder; decoder, word matches 
Answer:
 used for: connected-digit recognition, decoder; used for: duration constraints, decoder; used for: decoder, word matches