may rain
Regular verb: rain - rained- rained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it may rain
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it may be raining
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it may have rained
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it may have been raining
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Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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it mayn't rain
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it mayn't be raining
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it mayn't have rained
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it mayn't have been raining
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Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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may it rain?
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may it be raining?
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may it have rained?
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may it have been raining?
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Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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mayn't it rain?
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mayn't it be raining?
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mayn't it have rained?
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mayn't it have been raining?
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