ought to freeze
Irregular verb: freeze - froze- frozen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it ought to freeze
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it ought to be freezing
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it ought to have frozen
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it ought to have been freezing
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Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it ought not to freeze
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it ought not to freezing
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it ought not to have frozen
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it ought not to have been freezing
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Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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ought to it freeze?
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ought to it be freezing?
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ought to it have frozen?
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ought to it have been freezing?
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Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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ought it not to freeze?
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ought it not to be freezing?
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ought it not to have frozen?
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ought it not to have been freezing?
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