can plague
Regular verb: plague - plagued- plagued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can plague
you can plague
she can plague
we can plague
you can plague
they can plague 	I can be plaguing
you can be plaguing
she can be plaguing
we can be plaguing
you can be plaguing
they can be plaguing	I can have plagued
you can have plagued
she can have plagued
we can have plagued
you can have plagued
they can have plagued	I can have been plaguing
you can have been plaguing
she can have been plaguing
we can have been plaguing
you can have been plaguing
they can have been plaguing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't plague
you can't plague
she can't plague
we can't plague
you can't plague
they can't plague 	I can't be plaguing
you can't be plaguing
she can't be plaguing
we can't be plaguing
you can't be plaguing
they can't be plaguing	I can't have plagued
you can't have plagued
she can't have plagued
we can't have plagued
you can't have plagued
they can't have plagued	I can't have been plaguing
you can't have been plaguing
she can't have been plaguing
we can't have been plaguing
you can't have been plaguing
they can't have been plaguing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I plague?
can you plague?
can she plague?
can we plague?
can you plague?
can they plague? 	can I be plaguing?
can you be plaguing?
can she be plaguing?
can we be plaguing?
can you be plaguing?
can they be plaguing? 	can I have plagued?
can you have plagued?
can she have plagued?
can we have plagued?
can you have plagued?
can they have plagued? 	can I have been plaguing?
can you have been plaguing?
can she have been plaguing?
can we have been plaguing?
can you have been plaguing?
can they have been plaguing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I plague?
can't you plague?
can't she plague?
can't we plague?
can't you plague?
can't they plague? 	can't I be plaguing?
can't you be plaguing?
can't she be plaguing?
can't we be plaguing?
can't you be plaguing?
can't they be plaguing? 	can't I have plagued?
can't you have plagued?
can't she have plagued?
can't we have plagued?
can't you have plagued?
can't they have plagued? 	can't I have been plaguing?
can't you have been plaguing?
can't she have been plaguing?
can't we have been plaguing?
can't you have been plaguing?
can't they have been plaguing?