could malign
Regular verb: malign - maligned- maligned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could malign
you could malign
she could malign
we could malign
you could malign
they could malign 	I could be maligning
you could be maligning
she could be maligning
we could be maligning
you could be maligning
they could be maligning	I could have maligned
you could have maligned
she could have maligned
we could have maligned
you could have maligned
they could have maligned	I could have been maligning
you could have been maligning
she could have been maligning
we could have been maligning
you could have been maligning
they could have been maligning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't malign
you couldn't malign
she couldn't malign
we couldn't malign
you couldn't malign
they couldn't malign 	I couldn't be maligning
you couldn't be maligning
she couldn't be maligning
we couldn't be maligning
you couldn't be maligning
they couldn't be maligning	I couldn't have maligned
you couldn't have maligned
she couldn't have maligned
we couldn't have maligned
you couldn't have maligned
they couldn't have maligned	I couldn't have been maligning
you couldn't have been maligning
she couldn't have been maligning
we couldn't have been maligning
you couldn't have been maligning
they couldn't have been maligning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I malign?
could you malign?
could she malign?
could we malign?
could you malign?
could they malign? 	could I be maligning?
could you be maligning?
could she be maligning?
could we be maligning?
could you be maligning?
could they be maligning? 	could I have maligned?
could you have maligned?
could she have maligned?
could we have maligned?
could you have maligned?
could they have maligned? 	could I have been maligning?
could you have been maligning?
could she have been maligning?
could we have been maligning?
could you have been maligning?
could they have been maligning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I malign?
couldn't you malign?
couldn't she malign?
couldn't we malign?
couldn't you malign?
couldn't they malign? 	couldn't I be maligning?
couldn't you be maligning?
couldn't she be maligning?
couldn't we be maligning?
couldn't you be maligning?
couldn't they be maligning? 	couldn't I have maligned?
couldn't you have maligned?
couldn't she have maligned?
couldn't we have maligned?
couldn't you have maligned?
couldn't they have maligned? 	couldn't I have been maligning?
couldn't you have been maligning?
couldn't she have been maligning?
couldn't we have been maligning?
couldn't you have been maligning?
couldn't they have been maligning?