could gratulate
Verbo regular: gratulate - gratulated- gratulated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could gratulate
you could gratulate
he could gratulate
we could gratulate
you could gratulate
they could gratulate 	I could be gratulating
you could be gratulating
he could be gratulating
we could be gratulating
you could be gratulating
they could be gratulating	I could have gratulated
you could have gratulated
he could have gratulated
we could have gratulated
you could have gratulated
they could have gratulated	I could have been gratulating
you could have been gratulating
he could have been gratulating
we could have been gratulating
you could have been gratulating
they could have been gratulating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't gratulate
you couldn't gratulate
he couldn't gratulate
we couldn't gratulate
you couldn't gratulate
they couldn't gratulate 	I couldn't be gratulating
you couldn't be gratulating
he couldn't be gratulating
we couldn't be gratulating
you couldn't be gratulating
they couldn't be gratulating	I couldn't have gratulated
you couldn't have gratulated
he couldn't have gratulated
we couldn't have gratulated
you couldn't have gratulated
they couldn't have gratulated	I couldn't have been gratulating
you couldn't have been gratulating
he couldn't have been gratulating
we couldn't have been gratulating
you couldn't have been gratulating
they couldn't have been gratulating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I gratulate?
could you gratulate?
could he gratulate?
could we gratulate?
could you gratulate?
could they gratulate? 	could I be gratulating?
could you be gratulating?
could he be gratulating?
could we be gratulating?
could you be gratulating?
could they be gratulating? 	could I have gratulated?
could you have gratulated?
could he have gratulated?
could we have gratulated?
could you have gratulated?
could they have gratulated? 	could I have been gratulating?
could you have been gratulating?
could he have been gratulating?
could we have been gratulating?
could you have been gratulating?
could they have been gratulating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I gratulate?
couldn't you gratulate?
couldn't he gratulate?
couldn't we gratulate?
couldn't you gratulate?
couldn't they gratulate? 	couldn't I be gratulating?
couldn't you be gratulating?
couldn't he be gratulating?
couldn't we be gratulating?
couldn't you be gratulating?
couldn't they be gratulating? 	couldn't I have gratulated?
couldn't you have gratulated?
couldn't he have gratulated?
couldn't we have gratulated?
couldn't you have gratulated?
couldn't they have gratulated? 	couldn't I have been gratulating?
couldn't you have been gratulating?
couldn't he have been gratulating?
couldn't we have been gratulating?
couldn't you have been gratulating?
couldn't they have been gratulating?