can theorise
Regular verb: theorise - theorised- theorised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can theorise
you can theorise
he can theorise
we can theorise
you can theorise
they can theorise 	I can be theorising
you can be theorising
he can be theorising
we can be theorising
you can be theorising
they can be theorising	I can have theorised
you can have theorised
he can have theorised
we can have theorised
you can have theorised
they can have theorised	I can have been theorising
you can have been theorising
he can have been theorising
we can have been theorising
you can have been theorising
they can have been theorising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't theorise
you can't theorise
he can't theorise
we can't theorise
you can't theorise
they can't theorise 	I can't be theorising
you can't be theorising
he can't be theorising
we can't be theorising
you can't be theorising
they can't be theorising	I can't have theorised
you can't have theorised
he can't have theorised
we can't have theorised
you can't have theorised
they can't have theorised	I can't have been theorising
you can't have been theorising
he can't have been theorising
we can't have been theorising
you can't have been theorising
they can't have been theorising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I theorise?
can you theorise?
can he theorise?
can we theorise?
can you theorise?
can they theorise? 	can I be theorising?
can you be theorising?
can he be theorising?
can we be theorising?
can you be theorising?
can they be theorising? 	can I have theorised?
can you have theorised?
can he have theorised?
can we have theorised?
can you have theorised?
can they have theorised? 	can I have been theorising?
can you have been theorising?
can he have been theorising?
can we have been theorising?
can you have been theorising?
can they have been theorising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I theorise?
can't you theorise?
can't he theorise?
can't we theorise?
can't you theorise?
can't they theorise? 	can't I be theorising?
can't you be theorising?
can't he be theorising?
can't we be theorising?
can't you be theorising?
can't they be theorising? 	can't I have theorised?
can't you have theorised?
can't he have theorised?
can't we have theorised?
can't you have theorised?
can't they have theorised? 	can't I have been theorising?
can't you have been theorising?
can't he have been theorising?
can't we have been theorising?
can't you have been theorising?
can't they have been theorising?