English verb conjugation
COULD SPRINT

Regular verb: sprint - sprinted - sprinted

Affirmation

Simple form	V-ing form
I could sprint you could sprint he could sprint we could sprint you could sprint they could sprint	I could be sprinting you could be sprinting he could be sprinting we could be sprinting you could be sprinting they could be sprinting
Perfect	V-ing perfect
I could have sprinted you could have sprinted he could have sprinted we could have sprinted you could have sprinted they could have sprinted	I could have been sprinting you could have been sprinting he could have been sprinting we could have been sprinting you could have been sprinting they could have been sprinting

Negation

Simple form	V-ing form
I couldn't sprint you couldn't sprint he couldn't sprint we couldn't sprint you couldn't sprint they couldn't sprint	I couldn't be sprinting you couldn't be sprinting he couldn't be sprinting we couldn't be sprinting you couldn't be sprinting they couldn't be sprinting
Perfect	V-ing perfect
I couldn't have sprinted you couldn't have sprinted he couldn't have sprinted we couldn't have sprinted you couldn't have sprinted they couldn't have sprinted	I couldn't have been sprinting you couldn't have been sprinting he couldn't have been sprinting we couldn't have been sprinting you couldn't have been sprinting they couldn't have been sprinting

Interrogative form

Simple form	V-ing form
could I sprint? could you sprint? could he sprint? could we sprint? could you sprint? could they sprint?	could I be sprinting? could you be sprinting? could he be sprinting? could we be sprinting? could you be sprinting? could they be sprinting?
Perfect	V-ing perfect
could I have sprinted? could you have sprinted? could he have sprinted? could we have sprinted? could you have sprinted? could they have sprinted?	could I have been sprinting? could you have been sprinting? could he have been sprinting? could we have been sprinting? could you have been sprinting? could they have been sprinting?

Interro-negative form

Simple form	V-ing form
couldn't I sprint? couldn't you sprint? couldn't he sprint? couldn't we sprint? couldn't you sprint? couldn't they sprint?	couldn't I be sprinting? couldn't you be sprinting? couldn't he be sprinting? couldn't we be sprinting? couldn't you be sprinting? couldn't they be sprinting?
Perfect	V-ing perfect
couldn't I have sprinted? couldn't you have sprinted? couldn't he have sprinted? couldn't we have sprinted? couldn't you have sprinted? couldn't they have sprinted?	couldn't I have been sprinting? couldn't you have been sprinting? couldn't he have been sprinting? couldn't we have been sprinting? couldn't you have been sprinting? couldn't they have been sprinting?