English verb conjugation
COULD PRICKLE

Regular verb: prickle - prickled - prickled

Affirmation

Simple form	V-ing form
I could prickle you could prickle he could prickle we could prickle you could prickle they could prickle	I could be prickling you could be prickling he could be prickling we could be prickling you could be prickling they could be prickling
Perfect	V-ing perfect
I could have prickled you could have prickled he could have prickled we could have prickled you could have prickled they could have prickled	I could have been prickling you could have been prickling he could have been prickling we could have been prickling you could have been prickling they could have been prickling

Negation

Simple form	V-ing form
I couldn't prickle you couldn't prickle he couldn't prickle we couldn't prickle you couldn't prickle they couldn't prickle	I couldn't be prickling you couldn't be prickling he couldn't be prickling we couldn't be prickling you couldn't be prickling they couldn't be prickling
Perfect	V-ing perfect
I couldn't have prickled you couldn't have prickled he couldn't have prickled we couldn't have prickled you couldn't have prickled they couldn't have prickled	I couldn't have been prickling you couldn't have been prickling he couldn't have been prickling we couldn't have been prickling you couldn't have been prickling they couldn't have been prickling

Interrogative form

Simple form	V-ing form
could I prickle? could you prickle? could he prickle? could we prickle? could you prickle? could they prickle?	could I be prickling? could you be prickling? could he be prickling? could we be prickling? could you be prickling? could they be prickling?
Perfect	V-ing perfect
could I have prickled? could you have prickled? could he have prickled? could we have prickled? could you have prickled? could they have prickled?	could I have been prickling? could you have been prickling? could he have been prickling? could we have been prickling? could you have been prickling? could they have been prickling?

Interro-negative form

Simple form	V-ing form
couldn't I prickle? couldn't you prickle? couldn't he prickle? couldn't we prickle? couldn't you prickle? couldn't they prickle?	couldn't I be prickling? couldn't you be prickling? couldn't he be prickling? couldn't we be prickling? couldn't you be prickling? couldn't they be prickling?
Perfect	V-ing perfect
couldn't I have prickled? couldn't you have prickled? couldn't he have prickled? couldn't we have prickled? couldn't you have prickled? couldn't they have prickled?	couldn't I have been prickling? couldn't you have been prickling? couldn't he have been prickling? couldn't we have been prickling? couldn't you have been prickling? couldn't they have been prickling?