could radiotelephone
Regular verb: radiotelephone - radiotelephoned- radiotelephoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could radiotelephone
you could radiotelephone
he could radiotelephone
we could radiotelephone
you could radiotelephone
they could radiotelephone 	I could be radiotelephoning
you could be radiotelephoning
he could be radiotelephoning
we could be radiotelephoning
you could be radiotelephoning
they could be radiotelephoning	I could have radiotelephoned
you could have radiotelephoned
he could have radiotelephoned
we could have radiotelephoned
you could have radiotelephoned
they could have radiotelephoned	I could have been radiotelephoning
you could have been radiotelephoning
he could have been radiotelephoning
we could have been radiotelephoning
you could have been radiotelephoning
they could have been radiotelephoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not radiotelephone
you could not radiotelephone
he could not radiotelephone
we could not radiotelephone
you could not radiotelephone
they could not radiotelephone 	I could not be radiotelephoning
you could not be radiotelephoning
he could not be radiotelephoning
we could not be radiotelephoning
you could not be radiotelephoning
they could not be radiotelephoning	I could not have radiotelephoned
you could not have radiotelephoned
he could not have radiotelephoned
we could not have radiotelephoned
you could not have radiotelephoned
they could not have radiotelephoned	I could not have been radiotelephoning
you could not have been radiotelephoning
he could not have been radiotelephoning
we could not have been radiotelephoning
you could not have been radiotelephoning
they could not have been radiotelephoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I radiotelephone?
could you radiotelephone?
could he radiotelephone?
could we radiotelephone?
could you radiotelephone?
could they radiotelephone? 	could I be radiotelephoning?
could you be radiotelephoning?
could he be radiotelephoning?
could we be radiotelephoning?
could you be radiotelephoning?
could they be radiotelephoning? 	could I have radiotelephoned?
could you have radiotelephoned?
could he have radiotelephoned?
could we have radiotelephoned?
could you have radiotelephoned?
could they have radiotelephoned? 	could I have been radiotelephoning?
could you have been radiotelephoning?
could he have been radiotelephoning?
could we have been radiotelephoning?
could you have been radiotelephoning?
could they have been radiotelephoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not radiotelephone?
could you not radiotelephone?
could he not radiotelephone?
could we not radiotelephone?
could you not radiotelephone?
could they not radiotelephone? 	could I not be radiotelephoning?
could you not be radiotelephoning?
could he not be radiotelephoning?
could we not be radiotelephoning?
could you not be radiotelephoning?
could they not be radiotelephoning? 	could I not have radiotelephoned?
could you not have radiotelephoned?
could he not have radiotelephoned?
could we not have radiotelephoned?
could you not have radiotelephoned?
could they not have radiotelephoned? 	could I not have been radiotelephoning?
could you not have been radiotelephoning?
could he not have been radiotelephoning?
could we not have been radiotelephoning?
could you not have been radiotelephoning?
could they not have been radiotelephoning?