can authorise
Regular verb: authorise - authorised- authorised

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

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

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

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