English verb conjugation
CAN COURSE

Regular verb: course - coursed - coursed

Affirmation

Simple form	V-ing form
I can course you can course he can course we can course you can course they can course	I can be coursing you can be coursing he can be coursing we can be coursing you can be coursing they can be coursing
Perfect	V-ing perfect
I can have coursed you can have coursed he can have coursed we can have coursed you can have coursed they can have coursed	I can have been coursing you can have been coursing he can have been coursing we can have been coursing you can have been coursing they can have been coursing

Negation

Simple form	V-ing form
I cannot course you cannot course he cannot course we cannot course you cannot course they cannot course	I cannot be coursing you cannot be coursing he cannot be coursing we cannot be coursing you cannot be coursing they cannot be coursing
Perfect	V-ing perfect
I cannot have coursed you cannot have coursed he cannot have coursed we cannot have coursed you cannot have coursed they cannot have coursed	I cannot have been coursing you cannot have been coursing he cannot have been coursing we cannot have been coursing you cannot have been coursing they cannot have been coursing

Interrogative form

Simple form	V-ing form
can I course? can you course? can he course? can we course? can you course? can they course?	can I be coursing? can you be coursing? can he be coursing? can we be coursing? can you be coursing? can they be coursing?
Perfect	V-ing perfect
can I have coursed? can you have coursed? can he have coursed? can we have coursed? can you have coursed? can they have coursed?	can I have been coursing? can you have been coursing? can he have been coursing? can we have been coursing? can you have been coursing? can they have been coursing?

Interro-negative form

Simple form	V-ing form
can I not course? can you not course? can he not course? can we not course? can you not course? can they not course?	can I not be coursing? can you not be coursing? can he not be coursing? can we not be coursing? can you not be coursing? can they not be coursing?
Perfect	V-ing perfect
can I not have coursed? can you not have coursed? can he not have coursed? can we not have coursed? can you not have coursed? can they not have coursed?	can I not have been coursing? can you not have been coursing? can he not have been coursing? can we not have been coursing? can you not have been coursing? can they not have been coursing?