I can pursue you can pursue she can pursue we can pursue you can pursue they can pursue
V-ing form
I can be pursuing you can be pursuing she can be pursuing we can be pursuing you can be pursuing they can be pursuing
Perfect
I can have pursued you can have pursued she can have pursued we can have pursued you can have pursued they can have pursued
V-ing perfect
I can have been pursuing you can have been pursuing she can have been pursuing we can have been pursuing you can have been pursuing they can have been pursuing
Negation
Simple form
I cannot pursue you cannot pursue she cannot pursue we cannot pursue you cannot pursue they cannot pursue
V-ing form
I cannot be pursuing you cannot be pursuing she cannot be pursuing we cannot be pursuing you cannot be pursuing they cannot be pursuing
Perfect
I cannot have pursued you cannot have pursued she cannot have pursued we cannot have pursued you cannot have pursued they cannot have pursued
V-ing perfect
I cannot have been pursuing you cannot have been pursuing she cannot have been pursuing we cannot have been pursuing you cannot have been pursuing they cannot have been pursuing
Interrogative form
Simple form
can I pursue? can you pursue? can she pursue? can we pursue? can you pursue? can they pursue?
V-ing form
can I be pursuing? can you be pursuing? can she be pursuing? can we be pursuing? can you be pursuing? can they be pursuing?
Perfect
can I have pursued? can you have pursued? can she have pursued? can we have pursued? can you have pursued? can they have pursued?
V-ing perfect
can I have been pursuing? can you have been pursuing? can she have been pursuing? can we have been pursuing? can you have been pursuing? can they have been pursuing?
Interro-negative form
Simple form
can I not pursue? can you not pursue? can she not pursue? can we not pursue? can you not pursue? can they not pursue?
V-ing form
can I not be pursuing? can you not be pursuing? can she not be pursuing? can we not be pursuing? can you not be pursuing? can they not be pursuing?
Perfect
can I not have pursued? can you not have pursued? can she not have pursued? can we not have pursued? can you not have pursued? can they not have pursued?
V-ing perfect
can I not have been pursuing? can you not have been pursuing? can she not have been pursuing? can we not have been pursuing? can you not have been pursuing? can they not have been pursuing?