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 can't authorise
you can't authorise
she can't authorise
we can't authorise
you can't authorise
they can't authorise 	I can't be authorising
you can't be authorising
she can't be authorising
we can't be authorising
you can't be authorising
they can't be authorising	I can't have authorised
you can't have authorised
she can't have authorised
we can't have authorised
you can't have authorised
they can't have authorised	I can't have been authorising
you can't have been authorising
she can't have been authorising
we can't have been authorising
you can't have been authorising
they can't 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't I authorise?
can't you authorise?
can't she authorise?
can't we authorise?
can't you authorise?
can't they authorise? 	can't I be authorising?
can't you be authorising?
can't she be authorising?
can't we be authorising?
can't you be authorising?
can't they be authorising? 	can't I have authorised?
can't you have authorised?
can't she have authorised?
can't we have authorised?
can't you have authorised?
can't they have authorised? 	can't I have been authorising?
can't you have been authorising?
can't she have been authorising?
can't we have been authorising?
can't you have been authorising?
can't they have been authorising?