could stouten
Regular verb: stouten - stoutened- stoutened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could stouten
you could stouten
he could stouten
we could stouten
you could stouten
they could stouten 	I could be stoutening
you could be stoutening
he could be stoutening
we could be stoutening
you could be stoutening
they could be stoutening	I could have stoutened
you could have stoutened
he could have stoutened
we could have stoutened
you could have stoutened
they could have stoutened	I could have been stoutening
you could have been stoutening
he could have been stoutening
we could have been stoutening
you could have been stoutening
they could have been stoutening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't stouten
you couldn't stouten
he couldn't stouten
we couldn't stouten
you couldn't stouten
they couldn't stouten 	I couldn't be stoutening
you couldn't be stoutening
he couldn't be stoutening
we couldn't be stoutening
you couldn't be stoutening
they couldn't be stoutening	I couldn't have stoutened
you couldn't have stoutened
he couldn't have stoutened
we couldn't have stoutened
you couldn't have stoutened
they couldn't have stoutened	I couldn't have been stoutening
you couldn't have been stoutening
he couldn't have been stoutening
we couldn't have been stoutening
you couldn't have been stoutening
they couldn't have been stoutening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I stouten?
could you stouten?
could he stouten?
could we stouten?
could you stouten?
could they stouten? 	could I be stoutening?
could you be stoutening?
could he be stoutening?
could we be stoutening?
could you be stoutening?
could they be stoutening? 	could I have stoutened?
could you have stoutened?
could he have stoutened?
could we have stoutened?
could you have stoutened?
could they have stoutened? 	could I have been stoutening?
could you have been stoutening?
could he have been stoutening?
could we have been stoutening?
could you have been stoutening?
could they have been stoutening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I stouten?
couldn't you stouten?
couldn't he stouten?
couldn't we stouten?
couldn't you stouten?
couldn't they stouten? 	couldn't I be stoutening?
couldn't you be stoutening?
couldn't he be stoutening?
couldn't we be stoutening?
couldn't you be stoutening?
couldn't they be stoutening? 	couldn't I have stoutened?
couldn't you have stoutened?
couldn't he have stoutened?
couldn't we have stoutened?
couldn't you have stoutened?
couldn't they have stoutened? 	couldn't I have been stoutening?
couldn't you have been stoutening?
couldn't he have been stoutening?
couldn't we have been stoutening?
couldn't you have been stoutening?
couldn't they have been stoutening?