could type
Regular verb: type - typed- typed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could type
you could type
he could type
we could type
you could type
they could type 	I could be typing
you could be typing
he could be typing
we could be typing
you could be typing
they could be typing	I could have typed
you could have typed
he could have typed
we could have typed
you could have typed
they could have typed	I could have been typing
you could have been typing
he could have been typing
we could have been typing
you could have been typing
they could have been typing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not type
you could not type
he could not type
we could not type
you could not type
they could not type 	I could not be typing
you could not be typing
he could not be typing
we could not be typing
you could not be typing
they could not be typing	I could not have typed
you could not have typed
he could not have typed
we could not have typed
you could not have typed
they could not have typed	I could not have been typing
you could not have been typing
he could not have been typing
we could not have been typing
you could not have been typing
they could not have been typing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I type?
could you type?
could he type?
could we type?
could you type?
could they type? 	could I be typing?
could you be typing?
could he be typing?
could we be typing?
could you be typing?
could they be typing? 	could I have typed?
could you have typed?
could he have typed?
could we have typed?
could you have typed?
could they have typed? 	could I have been typing?
could you have been typing?
could he have been typing?
could we have been typing?
could you have been typing?
could they have been typing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not type?
could you not type?
could he not type?
could we not type?
could you not type?
could they not type? 	could I not be typing?
could you not be typing?
could he not be typing?
could we not be typing?
could you not be typing?
could they not be typing? 	could I not have typed?
could you not have typed?
could he not have typed?
could we not have typed?
could you not have typed?
could they not have typed? 	could I not have been typing?
could you not have been typing?
could he not have been typing?
could we not have been typing?
could you not have been typing?
could they not have been typing?