may appall
Regular verb: appall - appalled- appalled

Affirmation 	
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I may appall
you may appall
she may appall
we may appall
you may appall
they may appall 	I may be appalling
you may be appalling
she may be appalling
we may be appalling
you may be appalling
they may be appalling	I may have appalled
you may have appalled
she may have appalled
we may have appalled
you may have appalled
they may have appalled	I may have been appalling
you may have been appalling
she may have been appalling
we may have been appalling
you may have been appalling
they may have been appalling	

Negation 	
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I mayn't appall
you mayn't appall
she mayn't appall
we mayn't appall
you mayn't appall
they mayn't appall 	I mayn't be appalling
you mayn't be appalling
she mayn't be appalling
we mayn't be appalling
you mayn't be appalling
they mayn't be appalling	I mayn't have appalled
you mayn't have appalled
she mayn't have appalled
we mayn't have appalled
you mayn't have appalled
they mayn't have appalled	I mayn't have been appalling
you mayn't have been appalling
she mayn't have been appalling
we mayn't have been appalling
you mayn't have been appalling
they mayn't have been appalling	

Interrogative form 	
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may I appall?
may you appall?
may she appall?
may we appall?
may you appall?
may they appall? 	may I be appalling?
may you be appalling?
may she be appalling?
may we be appalling?
may you be appalling?
may they be appalling? 	may I have appalled?
may you have appalled?
may she have appalled?
may we have appalled?
may you have appalled?
may they have appalled? 	may I have been appalling?
may you have been appalling?
may she have been appalling?
may we have been appalling?
may you have been appalling?
may they have been appalling? 	

Interro-negative form 	
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mayn't I appall?
mayn't you appall?
mayn't she appall?
mayn't we appall?
mayn't you appall?
mayn't they appall? 	mayn't I be appalling?
mayn't you be appalling?
mayn't she be appalling?
mayn't we be appalling?
mayn't you be appalling?
mayn't they be appalling? 	mayn't I have appalled?
mayn't you have appalled?
mayn't she have appalled?
mayn't we have appalled?
mayn't you have appalled?
mayn't they have appalled? 	mayn't I have been appalling?
mayn't you have been appalling?
mayn't she have been appalling?
mayn't we have been appalling?
mayn't you have been appalling?
mayn't they have been appalling?