may double-check
Regular verb: double-check - double-checked- double-checked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may double-check
you may double-check
she may double-check
we may double-check
you may double-check
they may double-check 	I may be double-checking
you may be double-checking
she may be double-checking
we may be double-checking
you may be double-checking
they may be double-checking	I may have double-checked
you may have double-checked
she may have double-checked
we may have double-checked
you may have double-checked
they may have double-checked	I may have been double-checking
you may have been double-checking
she may have been double-checking
we may have been double-checking
you may have been double-checking
they may have been double-checking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't double-check
you mayn't double-check
she mayn't double-check
we mayn't double-check
you mayn't double-check
they mayn't double-check 	I mayn't be double-checking
you mayn't be double-checking
she mayn't be double-checking
we mayn't be double-checking
you mayn't be double-checking
they mayn't be double-checking	I mayn't have double-checked
you mayn't have double-checked
she mayn't have double-checked
we mayn't have double-checked
you mayn't have double-checked
they mayn't have double-checked	I mayn't have been double-checking
you mayn't have been double-checking
she mayn't have been double-checking
we mayn't have been double-checking
you mayn't have been double-checking
they mayn't have been double-checking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I double-check?
may you double-check?
may she double-check?
may we double-check?
may you double-check?
may they double-check? 	may I be double-checking?
may you be double-checking?
may she be double-checking?
may we be double-checking?
may you be double-checking?
may they be double-checking? 	may I have double-checked?
may you have double-checked?
may she have double-checked?
may we have double-checked?
may you have double-checked?
may they have double-checked? 	may I have been double-checking?
may you have been double-checking?
may she have been double-checking?
may we have been double-checking?
may you have been double-checking?
may they have been double-checking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I double-check?
mayn't you double-check?
mayn't she double-check?
mayn't we double-check?
mayn't you double-check?
mayn't they double-check? 	mayn't I be double-checking?
mayn't you be double-checking?
mayn't she be double-checking?
mayn't we be double-checking?
mayn't you be double-checking?
mayn't they be double-checking? 	mayn't I have double-checked?
mayn't you have double-checked?
mayn't she have double-checked?
mayn't we have double-checked?
mayn't you have double-checked?
mayn't they have double-checked? 	mayn't I have been double-checking?
mayn't you have been double-checking?
mayn't she have been double-checking?
mayn't we have been double-checking?
mayn't you have been double-checking?
mayn't they have been double-checking?