English verb conjugation
MAY GRATULATE

Regular verb: gratulate - gratulated - gratulated

Affirmation

Simple form	V-ing form
I may gratulate you may gratulate he may gratulate we may gratulate you may gratulate they may gratulate	I may be gratulating you may be gratulating he 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 he 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 he 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 mayn't gratulate you mayn't gratulate he mayn't gratulate we mayn't gratulate you mayn't gratulate they mayn't gratulate	I mayn't be gratulating you mayn't be gratulating he mayn't be gratulating we mayn't be gratulating you mayn't be gratulating they mayn't be gratulating
Perfect	V-ing perfect
I mayn't have gratulated you mayn't have gratulated he mayn't have gratulated we mayn't have gratulated you mayn't have gratulated they mayn't have gratulated	I mayn't have been gratulating you mayn't have been gratulating he mayn't have been gratulating we mayn't have been gratulating you mayn't have been gratulating they mayn't have been gratulating

Interrogative form

Simple form	V-ing form
may I gratulate? may you gratulate? may he gratulate? may we gratulate? may you gratulate? may they gratulate?	may I be gratulating? may you be gratulating? may he 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 he 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 he 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
mayn't I gratulate? mayn't you gratulate? mayn't he gratulate? mayn't we gratulate? mayn't you gratulate? mayn't they gratulate?	mayn't I be gratulating? mayn't you be gratulating? mayn't he be gratulating? mayn't we be gratulating? mayn't you be gratulating? mayn't they be gratulating?
Perfect	V-ing perfect
mayn't I have gratulated? mayn't you have gratulated? mayn't he have gratulated? mayn't we have gratulated? mayn't you have gratulated? mayn't they have gratulated?	mayn't I have been gratulating? mayn't you have been gratulating? mayn't he have been gratulating? mayn't we have been gratulating? mayn't you have been gratulating? mayn't they have been gratulating?