English verb conjugation
CAN CAPTAIN

Regular verb: captain - captained - captained

Affirmation

Simple form	V-ing form
I can captain you can captain he can captain we can captain you can captain they can captain	I can be captaining you can be captaining he can be captaining we can be captaining you can be captaining they can be captaining
Perfect	V-ing perfect
I can have captained you can have captained he can have captained we can have captained you can have captained they can have captained	I can have been captaining you can have been captaining he can have been captaining we can have been captaining you can have been captaining they can have been captaining

Negation

Simple form	V-ing form
I cannot captain you cannot captain he cannot captain we cannot captain you cannot captain they cannot captain	I cannot be captaining you cannot be captaining he cannot be captaining we cannot be captaining you cannot be captaining they cannot be captaining
Perfect	V-ing perfect
I cannot have captained you cannot have captained he cannot have captained we cannot have captained you cannot have captained they cannot have captained	I cannot have been captaining you cannot have been captaining he cannot have been captaining we cannot have been captaining you cannot have been captaining they cannot have been captaining

Interrogative form

Simple form	V-ing form
can I captain? can you captain? can he captain? can we captain? can you captain? can they captain?	can I be captaining? can you be captaining? can he be captaining? can we be captaining? can you be captaining? can they be captaining?
Perfect	V-ing perfect
can I have captained? can you have captained? can he have captained? can we have captained? can you have captained? can they have captained?	can I have been captaining? can you have been captaining? can he have been captaining? can we have been captaining? can you have been captaining? can they have been captaining?

Interro-negative form

Simple form	V-ing form
can I not captain? can you not captain? can he not captain? can we not captain? can you not captain? can they not captain?	can I not be captaining? can you not be captaining? can he not be captaining? can we not be captaining? can you not be captaining? can they not be captaining?
Perfect	V-ing perfect
can I not have captained? can you not have captained? can he not have captained? can we not have captained? can you not have captained? can they not have captained?	can I not have been captaining? can you not have been captaining? can he not have been captaining? can we not have been captaining? can you not have been captaining? can they not have been captaining?