could authorise
Regular verb: authorise - authorised- authorised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could authorise
you could authorise
she could authorise
we could authorise
you could authorise
they could authorise 	I could be authorising
you could be authorising
she could be authorising
we could be authorising
you could be authorising
they could be authorising	I could have authorised
you could have authorised
she could have authorised
we could have authorised
you could have authorised
they could have authorised	I could have been authorising
you could have been authorising
she could have been authorising
we could have been authorising
you could have been authorising
they could have been authorising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not authorise
you could not authorise
she could not authorise
we could not authorise
you could not authorise
they could not authorise 	I could not be authorising
you could not be authorising
she could not be authorising
we could not be authorising
you could not be authorising
they could not be authorising	I could not have authorised
you could not have authorised
she could not have authorised
we could not have authorised
you could not have authorised
they could not have authorised	I could not have been authorising
you could not have been authorising
she could not have been authorising
we could not have been authorising
you could not have been authorising
they could not have been authorising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I authorise?
could you authorise?
could she authorise?
could we authorise?
could you authorise?
could they authorise? 	could I be authorising?
could you be authorising?
could she be authorising?
could we be authorising?
could you be authorising?
could they be authorising? 	could I have authorised?
could you have authorised?
could she have authorised?
could we have authorised?
could you have authorised?
could they have authorised? 	could I have been authorising?
could you have been authorising?
could she have been authorising?
could we have been authorising?
could you have been authorising?
could they have been authorising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not authorise?
could you not authorise?
could she not authorise?
could we not authorise?
could you not authorise?
could they not authorise? 	could I not be authorising?
could you not be authorising?
could she not be authorising?
could we not be authorising?
could you not be authorising?
could they not be authorising? 	could I not have authorised?
could you not have authorised?
could she not have authorised?
could we not have authorised?
could you not have authorised?
could they not have authorised? 	could I not have been authorising?
could you not have been authorising?
could she not have been authorising?
could we not have been authorising?
could you not have been authorising?
could they not have been authorising?