can suppress
Regular verb: suppress - suppressed- suppressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can suppress
you can suppress
she can suppress
we can suppress
you can suppress
they can suppress 	I can be suppressing
you can be suppressing
she can be suppressing
we can be suppressing
you can be suppressing
they can be suppressing	I can have suppressed
you can have suppressed
she can have suppressed
we can have suppressed
you can have suppressed
they can have suppressed	I can have been suppressing
you can have been suppressing
she can have been suppressing
we can have been suppressing
you can have been suppressing
they can have been suppressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't suppress
you can't suppress
she can't suppress
we can't suppress
you can't suppress
they can't suppress 	I can't be suppressing
you can't be suppressing
she can't be suppressing
we can't be suppressing
you can't be suppressing
they can't be suppressing	I can't have suppressed
you can't have suppressed
she can't have suppressed
we can't have suppressed
you can't have suppressed
they can't have suppressed	I can't have been suppressing
you can't have been suppressing
she can't have been suppressing
we can't have been suppressing
you can't have been suppressing
they can't have been suppressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I suppress?
can you suppress?
can she suppress?
can we suppress?
can you suppress?
can they suppress? 	can I be suppressing?
can you be suppressing?
can she be suppressing?
can we be suppressing?
can you be suppressing?
can they be suppressing? 	can I have suppressed?
can you have suppressed?
can she have suppressed?
can we have suppressed?
can you have suppressed?
can they have suppressed? 	can I have been suppressing?
can you have been suppressing?
can she have been suppressing?
can we have been suppressing?
can you have been suppressing?
can they have been suppressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I suppress?
can't you suppress?
can't she suppress?
can't we suppress?
can't you suppress?
can't they suppress? 	can't I be suppressing?
can't you be suppressing?
can't she be suppressing?
can't we be suppressing?
can't you be suppressing?
can't they be suppressing? 	can't I have suppressed?
can't you have suppressed?
can't she have suppressed?
can't we have suppressed?
can't you have suppressed?
can't they have suppressed? 	can't I have been suppressing?
can't you have been suppressing?
can't she have been suppressing?
can't we have been suppressing?
can't you have been suppressing?
can't they have been suppressing?