English verb conjugation
COULD CHUCKLE

Regular verb: chuckle - chuckled - chuckled

Affirmation

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

Negation

Simple form	V-ing form
I could not chuckle you could not chuckle he could not chuckle we could not chuckle you could not chuckle they could not chuckle	I could not be chuckling you could not be chuckling he could not be chuckling we could not be chuckling you could not be chuckling they could not be chuckling
Perfect	V-ing perfect
I could not have chuckled you could not have chuckled he could not have chuckled we could not have chuckled you could not have chuckled they could not have chuckled	I could not have been chuckling you could not have been chuckling he could not have been chuckling we could not have been chuckling you could not have been chuckling they could not have been chuckling

Interrogative form

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

Interro-negative form

Simple form	V-ing form
could I not chuckle? could you not chuckle? could he not chuckle? could we not chuckle? could you not chuckle? could they not chuckle?	could I not be chuckling? could you not be chuckling? could he not be chuckling? could we not be chuckling? could you not be chuckling? could they not be chuckling?
Perfect	V-ing perfect
could I not have chuckled? could you not have chuckled? could he not have chuckled? could we not have chuckled? could you not have chuckled? could they not have chuckled?	could I not have been chuckling? could you not have been chuckling? could he not have been chuckling? could we not have been chuckling? could you not have been chuckling? could they not have been chuckling?