could pen
Verbo regolare: pen - penned- penned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could pen
you could pen
she could pen
we could pen
you could pen
they could pen 	I could be penning
you could be penning
she could be penning
we could be penning
you could be penning
they could be penning	I could have penned
you could have penned
she could have penned
we could have penned
you could have penned
they could have penned	I could have been penning
you could have been penning
she could have been penning
we could have been penning
you could have been penning
they could have been penning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not pen
you could not pen
she could not pen
we could not pen
you could not pen
they could not pen 	I could not be penning
you could not be penning
she could not be penning
we could not be penning
you could not be penning
they could not be penning	I could not have penned
you could not have penned
she could not have penned
we could not have penned
you could not have penned
they could not have penned	I could not have been penning
you could not have been penning
she could not have been penning
we could not have been penning
you could not have been penning
they could not have been penning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I pen?
could you pen?
could she pen?
could we pen?
could you pen?
could they pen? 	could I be penning?
could you be penning?
could she be penning?
could we be penning?
could you be penning?
could they be penning? 	could I have penned?
could you have penned?
could she have penned?
could we have penned?
could you have penned?
could they have penned? 	could I have been penning?
could you have been penning?
could she have been penning?
could we have been penning?
could you have been penning?
could they have been penning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not pen?
could you not pen?
could she not pen?
could we not pen?
could you not pen?
could they not pen? 	could I not be penning?
could you not be penning?
could she not be penning?
could we not be penning?
could you not be penning?
could they not be penning? 	could I not have penned?
could you not have penned?
could she not have penned?
could we not have penned?
could you not have penned?
could they not have penned? 	could I not have been penning?
could you not have been penning?
could she not have been penning?
could we not have been penning?
could you not have been penning?
could they not have been penning?