English verb conjugation
CAN REEF

Regular verb: reef - reefed - reefed

Affirmation

Simple form	V-ing form
I can reef you can reef she can reef we can reef you can reef they can reef	I can be reefing you can be reefing she can be reefing we can be reefing you can be reefing they can be reefing
Perfect	V-ing perfect
I can have reefed you can have reefed she can have reefed we can have reefed you can have reefed they can have reefed	I can have been reefing you can have been reefing she can have been reefing we can have been reefing you can have been reefing they can have been reefing

Negation

Simple form	V-ing form
I can't reef you can't reef she can't reef we can't reef you can't reef they can't reef	I can't be reefing you can't be reefing she can't be reefing we can't be reefing you can't be reefing they can't be reefing
Perfect	V-ing perfect
I can't have reefed you can't have reefed she can't have reefed we can't have reefed you can't have reefed they can't have reefed	I can't have been reefing you can't have been reefing she can't have been reefing we can't have been reefing you can't have been reefing they can't have been reefing

Interrogative form

Simple form	V-ing form
can I reef? can you reef? can she reef? can we reef? can you reef? can they reef?	can I be reefing? can you be reefing? can she be reefing? can we be reefing? can you be reefing? can they be reefing?
Perfect	V-ing perfect
can I have reefed? can you have reefed? can she have reefed? can we have reefed? can you have reefed? can they have reefed?	can I have been reefing? can you have been reefing? can she have been reefing? can we have been reefing? can you have been reefing? can they have been reefing?

Interro-negative form

Simple form	V-ing form
can't I reef? can't you reef? can't she reef? can't we reef? can't you reef? can't they reef?	can't I be reefing? can't you be reefing? can't she be reefing? can't we be reefing? can't you be reefing? can't they be reefing?
Perfect	V-ing perfect
can't I have reefed? can't you have reefed? can't she have reefed? can't we have reefed? can't you have reefed? can't they have reefed?	can't I have been reefing? can't you have been reefing? can't she have been reefing? can't we have been reefing? can't you have been reefing? can't they have been reefing?