English verb conjugation
CAN FLACK

Regular verb: flack - flacked - flacked

Affirmation

Simple form	V-ing form
I can flack you can flack she can flack we can flack you can flack they can flack	I can be flacking you can be flacking she can be flacking we can be flacking you can be flacking they can be flacking
Perfect	V-ing perfect
I can have flacked you can have flacked she can have flacked we can have flacked you can have flacked they can have flacked	I can have been flacking you can have been flacking she can have been flacking we can have been flacking you can have been flacking they can have been flacking

Negation

Simple form	V-ing form
I cannot flack you cannot flack she cannot flack we cannot flack you cannot flack they cannot flack	I cannot be flacking you cannot be flacking she cannot be flacking we cannot be flacking you cannot be flacking they cannot be flacking
Perfect	V-ing perfect
I cannot have flacked you cannot have flacked she cannot have flacked we cannot have flacked you cannot have flacked they cannot have flacked	I cannot have been flacking you cannot have been flacking she cannot have been flacking we cannot have been flacking you cannot have been flacking they cannot have been flacking

Interrogative form

Simple form	V-ing form
can I flack? can you flack? can she flack? can we flack? can you flack? can they flack?	can I be flacking? can you be flacking? can she be flacking? can we be flacking? can you be flacking? can they be flacking?
Perfect	V-ing perfect
can I have flacked? can you have flacked? can she have flacked? can we have flacked? can you have flacked? can they have flacked?	can I have been flacking? can you have been flacking? can she have been flacking? can we have been flacking? can you have been flacking? can they have been flacking?

Interro-negative form

Simple form	V-ing form
can I not flack? can you not flack? can she not flack? can we not flack? can you not flack? can they not flack?	can I not be flacking? can you not be flacking? can she not be flacking? can we not be flacking? can you not be flacking? can they not be flacking?
Perfect	V-ing perfect
can I not have flacked? can you not have flacked? can she not have flacked? can we not have flacked? can you not have flacked? can they not have flacked?	can I not have been flacking? can you not have been flacking? can she not have been flacking? can we not have been flacking? can you not have been flacking? can they not have been flacking?