could spearfish
Verbo regular: spearfish - spearfished- spearfished

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could spearfish
you could spearfish
she could spearfish
we could spearfish
you could spearfish
they could spearfish 	I could be spearfishing
you could be spearfishing
she could be spearfishing
we could be spearfishing
you could be spearfishing
they could be spearfishing	I could have spearfished
you could have spearfished
she could have spearfished
we could have spearfished
you could have spearfished
they could have spearfished	I could have been spearfishing
you could have been spearfishing
she could have been spearfishing
we could have been spearfishing
you could have been spearfishing
they could have been spearfishing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't spearfish
you couldn't spearfish
she couldn't spearfish
we couldn't spearfish
you couldn't spearfish
they couldn't spearfish 	I couldn't be spearfishing
you couldn't be spearfishing
she couldn't be spearfishing
we couldn't be spearfishing
you couldn't be spearfishing
they couldn't be spearfishing	I couldn't have spearfished
you couldn't have spearfished
she couldn't have spearfished
we couldn't have spearfished
you couldn't have spearfished
they couldn't have spearfished	I couldn't have been spearfishing
you couldn't have been spearfishing
she couldn't have been spearfishing
we couldn't have been spearfishing
you couldn't have been spearfishing
they couldn't have been spearfishing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I spearfish?
could you spearfish?
could she spearfish?
could we spearfish?
could you spearfish?
could they spearfish? 	could I be spearfishing?
could you be spearfishing?
could she be spearfishing?
could we be spearfishing?
could you be spearfishing?
could they be spearfishing? 	could I have spearfished?
could you have spearfished?
could she have spearfished?
could we have spearfished?
could you have spearfished?
could they have spearfished? 	could I have been spearfishing?
could you have been spearfishing?
could she have been spearfishing?
could we have been spearfishing?
could you have been spearfishing?
could they have been spearfishing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I spearfish?
couldn't you spearfish?
couldn't she spearfish?
couldn't we spearfish?
couldn't you spearfish?
couldn't they spearfish? 	couldn't I be spearfishing?
couldn't you be spearfishing?
couldn't she be spearfishing?
couldn't we be spearfishing?
couldn't you be spearfishing?
couldn't they be spearfishing? 	couldn't I have spearfished?
couldn't you have spearfished?
couldn't she have spearfished?
couldn't we have spearfished?
couldn't you have spearfished?
couldn't they have spearfished? 	couldn't I have been spearfishing?
couldn't you have been spearfishing?
couldn't she have been spearfishing?
couldn't we have been spearfishing?
couldn't you have been spearfishing?
couldn't they have been spearfishing?