English verb conjugation
CAN SPRAIN

Regular verb: sprain - sprained - sprained

Affirmation

Simple form	V-ing form
I can sprain you can sprain she can sprain we can sprain you can sprain they can sprain	I can be spraining you can be spraining she can be spraining we can be spraining you can be spraining they can be spraining
Perfect	V-ing perfect
I can have sprained you can have sprained she can have sprained we can have sprained you can have sprained they can have sprained	I can have been spraining you can have been spraining she can have been spraining we can have been spraining you can have been spraining they can have been spraining

Negation

Simple form	V-ing form
I can't sprain you can't sprain she can't sprain we can't sprain you can't sprain they can't sprain	I can't be spraining you can't be spraining she can't be spraining we can't be spraining you can't be spraining they can't be spraining
Perfect	V-ing perfect
I can't have sprained you can't have sprained she can't have sprained we can't have sprained you can't have sprained they can't have sprained	I can't have been spraining you can't have been spraining she can't have been spraining we can't have been spraining you can't have been spraining they can't have been spraining

Interrogative form

Simple form	V-ing form
can I sprain? can you sprain? can she sprain? can we sprain? can you sprain? can they sprain?	can I be spraining? can you be spraining? can she be spraining? can we be spraining? can you be spraining? can they be spraining?
Perfect	V-ing perfect
can I have sprained? can you have sprained? can she have sprained? can we have sprained? can you have sprained? can they have sprained?	can I have been spraining? can you have been spraining? can she have been spraining? can we have been spraining? can you have been spraining? can they have been spraining?

Interro-negative form

Simple form	V-ing form
can't I sprain? can't you sprain? can't she sprain? can't we sprain? can't you sprain? can't they sprain?	can't I be spraining? can't you be spraining? can't she be spraining? can't we be spraining? can't you be spraining? can't they be spraining?
Perfect	V-ing perfect
can't I have sprained? can't you have sprained? can't she have sprained? can't we have sprained? can't you have sprained? can't they have sprained?	can't I have been spraining? can't you have been spraining? can't she have been spraining? can't we have been spraining? can't you have been spraining? can't they have been spraining?