must sleet
Regular verb: sleet - sleeted- sleeted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it must sleet
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it must be sleeting
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it must have sleeted
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it must have been sleeting
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Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it mustn't sleet
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it mustn't be sleeting
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it mustn't have sleeted
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it mustn't have been sleeting
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Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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must it sleet?
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must it be sleeting?
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must it have sleeted?
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must it have been sleeting?
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Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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mustn't it sleet?
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mustn't it be sleeting?
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mustn't it have sleeted?
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mustn't it have been sleeting?
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