can sterilise
Regular verb: sterilise - sterilised- sterilised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sterilise
you can sterilise
she can sterilise
we can sterilise
you can sterilise
they can sterilise 	I can be sterilising
you can be sterilising
she can be sterilising
we can be sterilising
you can be sterilising
they can be sterilising	I can have sterilised
you can have sterilised
she can have sterilised
we can have sterilised
you can have sterilised
they can have sterilised	I can have been sterilising
you can have been sterilising
she can have been sterilising
we can have been sterilising
you can have been sterilising
they can have been sterilising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot sterilise
you cannot sterilise
she cannot sterilise
we cannot sterilise
you cannot sterilise
they cannot sterilise 	I cannot be sterilising
you cannot be sterilising
she cannot be sterilising
we cannot be sterilising
you cannot be sterilising
they cannot be sterilising	I cannot have sterilised
you cannot have sterilised
she cannot have sterilised
we cannot have sterilised
you cannot have sterilised
they cannot have sterilised	I cannot have been sterilising
you cannot have been sterilising
she cannot have been sterilising
we cannot have been sterilising
you cannot have been sterilising
they cannot have been sterilising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sterilise?
can you sterilise?
can she sterilise?
can we sterilise?
can you sterilise?
can they sterilise? 	can I be sterilising?
can you be sterilising?
can she be sterilising?
can we be sterilising?
can you be sterilising?
can they be sterilising? 	can I have sterilised?
can you have sterilised?
can she have sterilised?
can we have sterilised?
can you have sterilised?
can they have sterilised? 	can I have been sterilising?
can you have been sterilising?
can she have been sterilising?
can we have been sterilising?
can you have been sterilising?
can they have been sterilising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not sterilise?
can you not sterilise?
can she not sterilise?
can we not sterilise?
can you not sterilise?
can they not sterilise? 	can I not be sterilising?
can you not be sterilising?
can she not be sterilising?
can we not be sterilising?
can you not be sterilising?
can they not be sterilising? 	can I not have sterilised?
can you not have sterilised?
can she not have sterilised?
can we not have sterilised?
can you not have sterilised?
can they not have sterilised? 	can I not have been sterilising?
can you not have been sterilising?
can she not have been sterilising?
can we not have been sterilising?
can you not have been sterilising?
can they not have been sterilising?