could tuck
Verbo regular: tuck - tucked- tucked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could tuck
you could tuck
he could tuck
we could tuck
you could tuck
they could tuck 	I could be tucking
you could be tucking
he could be tucking
we could be tucking
you could be tucking
they could be tucking	I could have tucked
you could have tucked
he could have tucked
we could have tucked
you could have tucked
they could have tucked	I could have been tucking
you could have been tucking
he could have been tucking
we could have been tucking
you could have been tucking
they could have been tucking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't tuck
you couldn't tuck
he couldn't tuck
we couldn't tuck
you couldn't tuck
they couldn't tuck 	I couldn't be tucking
you couldn't be tucking
he couldn't be tucking
we couldn't be tucking
you couldn't be tucking
they couldn't be tucking	I couldn't have tucked
you couldn't have tucked
he couldn't have tucked
we couldn't have tucked
you couldn't have tucked
they couldn't have tucked	I couldn't have been tucking
you couldn't have been tucking
he couldn't have been tucking
we couldn't have been tucking
you couldn't have been tucking
they couldn't have been tucking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I tuck?
could you tuck?
could he tuck?
could we tuck?
could you tuck?
could they tuck? 	could I be tucking?
could you be tucking?
could he be tucking?
could we be tucking?
could you be tucking?
could they be tucking? 	could I have tucked?
could you have tucked?
could he have tucked?
could we have tucked?
could you have tucked?
could they have tucked? 	could I have been tucking?
could you have been tucking?
could he have been tucking?
could we have been tucking?
could you have been tucking?
could they have been tucking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I tuck?
couldn't you tuck?
couldn't he tuck?
couldn't we tuck?
couldn't you tuck?
couldn't they tuck? 	couldn't I be tucking?
couldn't you be tucking?
couldn't he be tucking?
couldn't we be tucking?
couldn't you be tucking?
couldn't they be tucking? 	couldn't I have tucked?
couldn't you have tucked?
couldn't he have tucked?
couldn't we have tucked?
couldn't you have tucked?
couldn't they have tucked? 	couldn't I have been tucking?
couldn't you have been tucking?
couldn't he have been tucking?
couldn't we have been tucking?
couldn't you have been tucking?
couldn't they have been tucking?