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In this model , on-line handwriting is considered as a modulation of a simple cycloidal pen motion , described by two coupled oscillations with a constant linear drift along the line of the writing .
 used for: model, on-line handwriting; part of: on-line handwriting, cycloidal pen motion
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 used for: model, on-line handwriting; part of: on-line handwriting, cycloidal pen motion