can chuckle
Regular verb: chuckle - chuckled- chuckled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can chuckle
you can chuckle
he can chuckle
we can chuckle
you can chuckle
they can chuckle 	I can be chuckling
you can be chuckling
he can be chuckling
we can be chuckling
you can be chuckling
they can be chuckling	I can have chuckled
you can have chuckled
he can have chuckled
we can have chuckled
you can have chuckled
they can have chuckled	I can have been chuckling
you can have been chuckling
he can have been chuckling
we can have been chuckling
you can have been chuckling
they can have been chuckling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't chuckle
you can't chuckle
he can't chuckle
we can't chuckle
you can't chuckle
they can't chuckle 	I can't be chuckling
you can't be chuckling
he can't be chuckling
we can't be chuckling
you can't be chuckling
they can't be chuckling	I can't have chuckled
you can't have chuckled
he can't have chuckled
we can't have chuckled
you can't have chuckled
they can't have chuckled	I can't have been chuckling
you can't have been chuckling
he can't have been chuckling
we can't have been chuckling
you can't have been chuckling
they can't have been chuckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I chuckle?
can you chuckle?
can he chuckle?
can we chuckle?
can you chuckle?
can they chuckle? 	can I be chuckling?
can you be chuckling?
can he be chuckling?
can we be chuckling?
can you be chuckling?
can they be chuckling? 	can I have chuckled?
can you have chuckled?
can he have chuckled?
can we have chuckled?
can you have chuckled?
can they have chuckled? 	can I have been chuckling?
can you have been chuckling?
can he have been chuckling?
can we have been chuckling?
can you have been chuckling?
can they have been chuckling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I chuckle?
can't you chuckle?
can't he chuckle?
can't we chuckle?
can't you chuckle?
can't they chuckle? 	can't I be chuckling?
can't you be chuckling?
can't he be chuckling?
can't we be chuckling?
can't you be chuckling?
can't they be chuckling? 	can't I have chuckled?
can't you have chuckled?
can't he have chuckled?
can't we have chuckled?
can't you have chuckled?
can't they have chuckled? 	can't I have been chuckling?
can't you have been chuckling?
can't he have been chuckling?
can't we have been chuckling?
can't you have been chuckling?
can't they have been chuckling?