may prognosticate
Regular verb: prognosticate - prognosticated- prognosticated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may prognosticate
you may prognosticate
she may prognosticate
we may prognosticate
you may prognosticate
they may prognosticate 	I may be prognosticating
you may be prognosticating
she may be prognosticating
we may be prognosticating
you may be prognosticating
they may be prognosticating	I may have prognosticated
you may have prognosticated
she may have prognosticated
we may have prognosticated
you may have prognosticated
they may have prognosticated	I may have been prognosticating
you may have been prognosticating
she may have been prognosticating
we may have been prognosticating
you may have been prognosticating
they may have been prognosticating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't prognosticate
you mayn't prognosticate
she mayn't prognosticate
we mayn't prognosticate
you mayn't prognosticate
they mayn't prognosticate 	I mayn't be prognosticating
you mayn't be prognosticating
she mayn't be prognosticating
we mayn't be prognosticating
you mayn't be prognosticating
they mayn't be prognosticating	I mayn't have prognosticated
you mayn't have prognosticated
she mayn't have prognosticated
we mayn't have prognosticated
you mayn't have prognosticated
they mayn't have prognosticated	I mayn't have been prognosticating
you mayn't have been prognosticating
she mayn't have been prognosticating
we mayn't have been prognosticating
you mayn't have been prognosticating
they mayn't have been prognosticating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I prognosticate?
may you prognosticate?
may she prognosticate?
may we prognosticate?
may you prognosticate?
may they prognosticate? 	may I be prognosticating?
may you be prognosticating?
may she be prognosticating?
may we be prognosticating?
may you be prognosticating?
may they be prognosticating? 	may I have prognosticated?
may you have prognosticated?
may she have prognosticated?
may we have prognosticated?
may you have prognosticated?
may they have prognosticated? 	may I have been prognosticating?
may you have been prognosticating?
may she have been prognosticating?
may we have been prognosticating?
may you have been prognosticating?
may they have been prognosticating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I prognosticate?
mayn't you prognosticate?
mayn't she prognosticate?
mayn't we prognosticate?
mayn't you prognosticate?
mayn't they prognosticate? 	mayn't I be prognosticating?
mayn't you be prognosticating?
mayn't she be prognosticating?
mayn't we be prognosticating?
mayn't you be prognosticating?
mayn't they be prognosticating? 	mayn't I have prognosticated?
mayn't you have prognosticated?
mayn't she have prognosticated?
mayn't we have prognosticated?
mayn't you have prognosticated?
mayn't they have prognosticated? 	mayn't I have been prognosticating?
mayn't you have been prognosticating?
mayn't she have been prognosticating?
mayn't we have been prognosticating?
mayn't you have been prognosticating?
mayn't they have been prognosticating?