can superscribe
Regular verb: superscribe - superscribed- superscribed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can superscribe
you can superscribe
he can superscribe
we can superscribe
you can superscribe
they can superscribe 	I can be superscribing
you can be superscribing
he can be superscribing
we can be superscribing
you can be superscribing
they can be superscribing	I can have superscribed
you can have superscribed
he can have superscribed
we can have superscribed
you can have superscribed
they can have superscribed	I can have been superscribing
you can have been superscribing
he can have been superscribing
we can have been superscribing
you can have been superscribing
they can have been superscribing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't superscribe
you can't superscribe
he can't superscribe
we can't superscribe
you can't superscribe
they can't superscribe 	I can't be superscribing
you can't be superscribing
he can't be superscribing
we can't be superscribing
you can't be superscribing
they can't be superscribing	I can't have superscribed
you can't have superscribed
he can't have superscribed
we can't have superscribed
you can't have superscribed
they can't have superscribed	I can't have been superscribing
you can't have been superscribing
he can't have been superscribing
we can't have been superscribing
you can't have been superscribing
they can't have been superscribing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I superscribe?
can you superscribe?
can he superscribe?
can we superscribe?
can you superscribe?
can they superscribe? 	can I be superscribing?
can you be superscribing?
can he be superscribing?
can we be superscribing?
can you be superscribing?
can they be superscribing? 	can I have superscribed?
can you have superscribed?
can he have superscribed?
can we have superscribed?
can you have superscribed?
can they have superscribed? 	can I have been superscribing?
can you have been superscribing?
can he have been superscribing?
can we have been superscribing?
can you have been superscribing?
can they have been superscribing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I superscribe?
can't you superscribe?
can't he superscribe?
can't we superscribe?
can't you superscribe?
can't they superscribe? 	can't I be superscribing?
can't you be superscribing?
can't he be superscribing?
can't we be superscribing?
can't you be superscribing?
can't they be superscribing? 	can't I have superscribed?
can't you have superscribed?
can't he have superscribed?
can't we have superscribed?
can't you have superscribed?
can't they have superscribed? 	can't I have been superscribing?
can't you have been superscribing?
can't he have been superscribing?
can't we have been superscribing?
can't you have been superscribing?
can't they have been superscribing?