could thieve
Verbo regular: thieve - thieved- thieved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could thieve
you could thieve
he could thieve
we could thieve
you could thieve
they could thieve 	I could be thieving
you could be thieving
he could be thieving
we could be thieving
you could be thieving
they could be thieving	I could have thieved
you could have thieved
he could have thieved
we could have thieved
you could have thieved
they could have thieved	I could have been thieving
you could have been thieving
he could have been thieving
we could have been thieving
you could have been thieving
they could have been thieving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't thieve
you couldn't thieve
he couldn't thieve
we couldn't thieve
you couldn't thieve
they couldn't thieve 	I couldn't be thieving
you couldn't be thieving
he couldn't be thieving
we couldn't be thieving
you couldn't be thieving
they couldn't be thieving	I couldn't have thieved
you couldn't have thieved
he couldn't have thieved
we couldn't have thieved
you couldn't have thieved
they couldn't have thieved	I couldn't have been thieving
you couldn't have been thieving
he couldn't have been thieving
we couldn't have been thieving
you couldn't have been thieving
they couldn't have been thieving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I thieve?
could you thieve?
could he thieve?
could we thieve?
could you thieve?
could they thieve? 	could I be thieving?
could you be thieving?
could he be thieving?
could we be thieving?
could you be thieving?
could they be thieving? 	could I have thieved?
could you have thieved?
could he have thieved?
could we have thieved?
could you have thieved?
could they have thieved? 	could I have been thieving?
could you have been thieving?
could he have been thieving?
could we have been thieving?
could you have been thieving?
could they have been thieving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I thieve?
couldn't you thieve?
couldn't he thieve?
couldn't we thieve?
couldn't you thieve?
couldn't they thieve? 	couldn't I be thieving?
couldn't you be thieving?
couldn't he be thieving?
couldn't we be thieving?
couldn't you be thieving?
couldn't they be thieving? 	couldn't I have thieved?
couldn't you have thieved?
couldn't he have thieved?
couldn't we have thieved?
couldn't you have thieved?
couldn't they have thieved? 	couldn't I have been thieving?
couldn't you have been thieving?
couldn't he have been thieving?
couldn't we have been thieving?
couldn't you have been thieving?
couldn't they have been thieving?