may thunder
Verbo regular: thunder - thundered- thundered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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-
it may thunder
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-
- 	-
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it may be thundering
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-
- 	-
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it may have thundered
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-
- 	-
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it may have been thundering
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-
- 	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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it may not thunder
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-
- 	-
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it may not be thundering
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-
- 	-
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it may not have thundered
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-
- 	-
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it may not have been thundering
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-
- 	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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may it thunder?
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-
- 	-
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may it be thundering?
-
-
- 	-
-
may it have thundered?
-
-
- 	-
-
may it have been thundering?
-
-
- 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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may it not thunder?
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-
- 	-
-
may it not be thundering?
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-
- 	-
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may it not have thundered?
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-
- 	-
-
may it not have been thundering?
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-
-