What common English verb becomes its own past tense by rearr

谜语题目：What common English verb becomes its own past tense by rearranging its letters? （哪个英语常见动词重排字母顺序后就变成自己的过去式?）
 
 
谜语解析：Eat or Ate 
 
 
谜语答案：Eat or Ate 

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