can reef
Verbo regular: reef - reefed- reefed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can reef
you can reef
he can reef
we can reef
you can reef
they can reef 	I can be reefing
you can be reefing
he can be reefing
we can be reefing
you can be reefing
they can be reefing	I can have reefed
you can have reefed
he 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
he can have been reefing
we can have been reefing
you can have been reefing
they can have been reefing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't reef
you can't reef
he 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
he can't be reefing
we can't be reefing
you can't be reefing
they can't be reefing	I can't have reefed
you can't have reefed
he 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
he can't have been reefing
we can't have been reefing
you can't have been reefing
they can't have been reefing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I reef?
can you reef?
can he reef?
can we reef?
can you reef?
can they reef? 	can I be reefing?
can you be reefing?
can he be reefing?
can we be reefing?
can you be reefing?
can they be reefing? 	can I have reefed?
can you have reefed?
can he 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 he have been reefing?
can we have been reefing?
can you have been reefing?
can they have been reefing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I reef?
can't you reef?
can't he 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 he be reefing?
can't we be reefing?
can't you be reefing?
can't they be reefing? 	can't I have reefed?
can't you have reefed?
can't he 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 he have been reefing?
can't we have been reefing?
can't you have been reefing?
can't they have been reefing?