299425
Other than the provision of extra isolation for 34 signal pairs , there is no defined allocation of the signals within the Primary I/O and Secondary I/O groups , leaving each FeaturePak to define its own utilization of the I/O signals .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None