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 couldn't chuckle you couldn't chuckle he couldn't chuckle we couldn't chuckle you couldn't chuckle they couldn't chuckle	I couldn't be chuckling you couldn't be chuckling he couldn't be chuckling we couldn't be chuckling you couldn't be chuckling they couldn't be chuckling
Perfect	V-ing perfect
I couldn't have chuckled you couldn't have chuckled he couldn't have chuckled we couldn't have chuckled you couldn't have chuckled they couldn't have chuckled	I couldn't have been chuckling you couldn't have been chuckling he couldn't have been chuckling we couldn't have been chuckling you couldn't have been chuckling they couldn't 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
couldn't I chuckle? couldn't you chuckle? couldn't he chuckle? couldn't we chuckle? couldn't you chuckle? couldn't they chuckle?	couldn't I be chuckling? couldn't you be chuckling? couldn't he be chuckling? couldn't we be chuckling? couldn't you be chuckling? couldn't they be chuckling?
Perfect	V-ing perfect
couldn't I have chuckled? couldn't you have chuckled? couldn't he have chuckled? couldn't we have chuckled? couldn't you have chuckled? couldn't they have chuckled?	couldn't I have been chuckling? couldn't you have been chuckling? couldn't he have been chuckling? couldn't we have been chuckling? couldn't you have been chuckling? couldn't they have been chuckling?