must gratulate
Regular verb: gratulate - gratulated- gratulated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't gratulate
you mustn't gratulate
she mustn't gratulate
we mustn't gratulate
you mustn't gratulate
they mustn't gratulate 	I mustn't be gratulating
you mustn't be gratulating
she mustn't be gratulating
we mustn't be gratulating
you mustn't be gratulating
they mustn't be gratulating	I mustn't have gratulated
you mustn't have gratulated
she mustn't have gratulated
we mustn't have gratulated
you mustn't have gratulated
they mustn't have gratulated	I mustn't have been gratulating
you mustn't have been gratulating
she mustn't have been gratulating
we mustn't have been gratulating
you mustn't have been gratulating
they mustn't have been gratulating	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I gratulate?
mustn't you gratulate?
mustn't she gratulate?
mustn't we gratulate?
mustn't you gratulate?
mustn't they gratulate? 	mustn't I be gratulating?
mustn't you be gratulating?
mustn't she be gratulating?
mustn't we be gratulating?
mustn't you be gratulating?
mustn't they be gratulating? 	mustn't I have gratulated?
mustn't you have gratulated?
mustn't she have gratulated?
mustn't we have gratulated?
mustn't you have gratulated?
mustn't they have gratulated? 	mustn't I have been gratulating?
mustn't you have been gratulating?
mustn't she have been gratulating?
mustn't we have been gratulating?
mustn't you have been gratulating?
mustn't they have been gratulating?