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 can't refill you can't refill he can't refill we can't refill you can't refill they can't refill	I can't be refilling you can't be refilling he can't be refilling we can't be refilling you can't be refilling they can't be refilling
Perfect	V-ing perfect
I can't have refilled you can't have refilled he can't have refilled we can't have refilled you can't have refilled they can't have refilled	I can't have been refilling you can't have been refilling he can't have been refilling we can't have been refilling you can't have been refilling they can't 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't I refill? can't you refill? can't he refill? can't we refill? can't you refill? can't they refill?	can't I be refilling? can't you be refilling? can't he be refilling? can't we be refilling? can't you be refilling? can't they be refilling?
Perfect	V-ing perfect
can't I have refilled? can't you have refilled? can't he have refilled? can't we have refilled? can't you have refilled? can't they have refilled?	can't I have been refilling? can't you have been refilling? can't he have been refilling? can't we have been refilling? can't you have been refilling? can't they have been refilling?