could reproduce
Verbo regular: reproduce - reproduced- reproduced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could reproduce
you could reproduce
she could reproduce
we could reproduce
you could reproduce
they could reproduce 	I could be reproducing
you could be reproducing
she could be reproducing
we could be reproducing
you could be reproducing
they could be reproducing	I could have reproduced
you could have reproduced
she could have reproduced
we could have reproduced
you could have reproduced
they could have reproduced	I could have been reproducing
you could have been reproducing
she could have been reproducing
we could have been reproducing
you could have been reproducing
they could have been reproducing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't reproduce
you couldn't reproduce
she couldn't reproduce
we couldn't reproduce
you couldn't reproduce
they couldn't reproduce 	I couldn't be reproducing
you couldn't be reproducing
she couldn't be reproducing
we couldn't be reproducing
you couldn't be reproducing
they couldn't be reproducing	I couldn't have reproduced
you couldn't have reproduced
she couldn't have reproduced
we couldn't have reproduced
you couldn't have reproduced
they couldn't have reproduced	I couldn't have been reproducing
you couldn't have been reproducing
she couldn't have been reproducing
we couldn't have been reproducing
you couldn't have been reproducing
they couldn't have been reproducing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I reproduce?
could you reproduce?
could she reproduce?
could we reproduce?
could you reproduce?
could they reproduce? 	could I be reproducing?
could you be reproducing?
could she be reproducing?
could we be reproducing?
could you be reproducing?
could they be reproducing? 	could I have reproduced?
could you have reproduced?
could she have reproduced?
could we have reproduced?
could you have reproduced?
could they have reproduced? 	could I have been reproducing?
could you have been reproducing?
could she have been reproducing?
could we have been reproducing?
could you have been reproducing?
could they have been reproducing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I reproduce?
couldn't you reproduce?
couldn't she reproduce?
couldn't we reproduce?
couldn't you reproduce?
couldn't they reproduce? 	couldn't I be reproducing?
couldn't you be reproducing?
couldn't she be reproducing?
couldn't we be reproducing?
couldn't you be reproducing?
couldn't they be reproducing? 	couldn't I have reproduced?
couldn't you have reproduced?
couldn't she have reproduced?
couldn't we have reproduced?
couldn't you have reproduced?
couldn't they have reproduced? 	couldn't I have been reproducing?
couldn't you have been reproducing?
couldn't she have been reproducing?
couldn't we have been reproducing?
couldn't you have been reproducing?
couldn't they have been reproducing?