English verb conjugation
MAY GRATULATE

Regular verb: gratulate - gratulated - gratulated

Affirmation

Simple form	V-ing form
I may gratulate you may gratulate she may gratulate we may gratulate you may gratulate they may gratulate	I may be gratulating you may be gratulating she may be gratulating we may be gratulating you may be gratulating they may be gratulating
Perfect	V-ing perfect
I may have gratulated you may have gratulated she may have gratulated we may have gratulated you may have gratulated they may have gratulated	I may have been gratulating you may have been gratulating she may have been gratulating we may have been gratulating you may have been gratulating they may have been gratulating

Negation

Simple form	V-ing form
I may not gratulate you may not gratulate she may not gratulate we may not gratulate you may not gratulate they may not gratulate	I may not be gratulating you may not be gratulating she may not be gratulating we may not be gratulating you may not be gratulating they may not be gratulating
Perfect	V-ing perfect
I may not have gratulated you may not have gratulated she may not have gratulated we may not have gratulated you may not have gratulated they may not have gratulated	I may not have been gratulating you may not have been gratulating she may not have been gratulating we may not have been gratulating you may not have been gratulating they may not have been gratulating

Interrogative form

Simple form	V-ing form
may I gratulate? may you gratulate? may she gratulate? may we gratulate? may you gratulate? may they gratulate?	may I be gratulating? may you be gratulating? may she be gratulating? may we be gratulating? may you be gratulating? may they be gratulating?
Perfect	V-ing perfect
may I have gratulated? may you have gratulated? may she have gratulated? may we have gratulated? may you have gratulated? may they have gratulated?	may I have been gratulating? may you have been gratulating? may she have been gratulating? may we have been gratulating? may you have been gratulating? may they have been gratulating?

Interro-negative form

Simple form	V-ing form
may I not gratulate? may you not gratulate? may she not gratulate? may we not gratulate? may you not gratulate? may they not gratulate?	may I not be gratulating? may you not be gratulating? may she not be gratulating? may we not be gratulating? may you not be gratulating? may they not be gratulating?
Perfect	V-ing perfect
may I not have gratulated? may you not have gratulated? may she not have gratulated? may we not have gratulated? may you not have gratulated? may they not have gratulated?	may I not have been gratulating? may you not have been gratulating? may she not have been gratulating? may we not have been gratulating? may you not have been gratulating? may they not have been gratulating?