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Chakangrao , the ancient Kamphaeng Phet town , had the same town planning concept as the old Sukhothai and Si Satchanalai , with separate zones for religious sites both within and outside of town limits .
 Kamphaeng Phet
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kamphaeng Phet