can scoff
Regular verb: scoff - scoffed- scoffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can scoff
you can scoff
she can scoff
we can scoff
you can scoff
they can scoff 	I can be scoffing
you can be scoffing
she can be scoffing
we can be scoffing
you can be scoffing
they can be scoffing	I can have scoffed
you can have scoffed
she can have scoffed
we can have scoffed
you can have scoffed
they can have scoffed	I can have been scoffing
you can have been scoffing
she can have been scoffing
we can have been scoffing
you can have been scoffing
they can have been scoffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't scoff
you can't scoff
she can't scoff
we can't scoff
you can't scoff
they can't scoff 	I can't be scoffing
you can't be scoffing
she can't be scoffing
we can't be scoffing
you can't be scoffing
they can't be scoffing	I can't have scoffed
you can't have scoffed
she can't have scoffed
we can't have scoffed
you can't have scoffed
they can't have scoffed	I can't have been scoffing
you can't have been scoffing
she can't have been scoffing
we can't have been scoffing
you can't have been scoffing
they can't have been scoffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I scoff?
can you scoff?
can she scoff?
can we scoff?
can you scoff?
can they scoff? 	can I be scoffing?
can you be scoffing?
can she be scoffing?
can we be scoffing?
can you be scoffing?
can they be scoffing? 	can I have scoffed?
can you have scoffed?
can she have scoffed?
can we have scoffed?
can you have scoffed?
can they have scoffed? 	can I have been scoffing?
can you have been scoffing?
can she have been scoffing?
can we have been scoffing?
can you have been scoffing?
can they have been scoffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I scoff?
can't you scoff?
can't she scoff?
can't we scoff?
can't you scoff?
can't they scoff? 	can't I be scoffing?
can't you be scoffing?
can't she be scoffing?
can't we be scoffing?
can't you be scoffing?
can't they be scoffing? 	can't I have scoffed?
can't you have scoffed?
can't she have scoffed?
can't we have scoffed?
can't you have scoffed?
can't they have scoffed? 	can't I have been scoffing?
can't you have been scoffing?
can't she have been scoffing?
can't we have been scoffing?
can't you have been scoffing?
can't they have been scoffing?