English verb conjugation
CAN REFILL

Regular verb: refill - refilled - refilled

Affirmation

Simple form	V-ing form
I can refill you can refill he can refill we can refill you can refill they can refill	I can be refilling you can be refilling he can be refilling we can be refilling you can be refilling they can be refilling
Perfect	V-ing perfect
I can have refilled you can have refilled he can have refilled we can have refilled you can have refilled they can have refilled	I can have been refilling you can have been refilling he can have been refilling we can have been refilling you can have been refilling they can have been refilling

Negation

Simple form	V-ing form
I cannot refill you cannot refill he cannot refill we cannot refill you cannot refill they cannot refill	I cannot be refilling you cannot be refilling he cannot be refilling we cannot be refilling you cannot be refilling they cannot be refilling
Perfect	V-ing perfect
I cannot have refilled you cannot have refilled he cannot have refilled we cannot have refilled you cannot have refilled they cannot have refilled	I cannot have been refilling you cannot have been refilling he cannot have been refilling we cannot have been refilling you cannot have been refilling they cannot have been refilling

Interrogative form

Simple form	V-ing form
can I refill? can you refill? can he refill? can we refill? can you refill? can they refill?	can I be refilling? can you be refilling? can he be refilling? can we be refilling? can you be refilling? can they be refilling?
Perfect	V-ing perfect
can I have refilled? can you have refilled? can he have refilled? can we have refilled? can you have refilled? can they have refilled?	can I have been refilling? can you have been refilling? can he have been refilling? can we have been refilling? can you have been refilling? can they have been refilling?

Interro-negative form

Simple form	V-ing form
can I not refill? can you not refill? can he not refill? can we not refill? can you not refill? can they not refill?	can I not be refilling? can you not be refilling? can he not be refilling? can we not be refilling? can you not be refilling? can they not be refilling?
Perfect	V-ing perfect
can I not have refilled? can you not have refilled? can he not have refilled? can we not have refilled? can you not have refilled? can they not have refilled?	can I not have been refilling? can you not have been refilling? can he not have been refilling? can we not have been refilling? can you not have been refilling? can they not have been refilling?