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