can course
Regular verb: course - coursed- coursed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I can't course
you can't course
he can't course
we can't course
you can't course
they can't course 	I can't be coursing
you can't be coursing
he can't be coursing
we can't be coursing
you can't be coursing
they can't be coursing	I can't have coursed
you can't have coursed
he can't have coursed
we can't have coursed
you can't have coursed
they can't have coursed	I can't have been coursing
you can't have been coursing
he can't have been coursing
we can't have been coursing
you can't have been coursing
they can't have been coursing	

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