to thunder
Regular verb: thunder - thundered- thundered

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
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it thunders
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itisthundering
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it thundered
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itwasthundering
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Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
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it has thundered
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ithasbeen thundering
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it had thundered
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it had been thundering
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Future 	Future continuous 	Future perfect 	Future perfect continuous 	
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it will thunder
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it will be thundering
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it will have thundered
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it will have been thundering
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Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
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it would thunder
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it would be thundering
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it would have thundered
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it would have been thundering
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Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to thunder 	 	-
Let's thunder
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Participle 	
Present 	Past 	 	 	
thundering	thundered