can grey
Regular verb: grey - greyed- greyed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can grey
you can grey
she can grey
we can grey
you can grey
they can grey 	I can be greying
you can be greying
she can be greying
we can be greying
you can be greying
they can be greying	I can have greyed
you can have greyed
she can have greyed
we can have greyed
you can have greyed
they can have greyed	I can have been greying
you can have been greying
she can have been greying
we can have been greying
you can have been greying
they can have been greying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't grey
you can't grey
she can't grey
we can't grey
you can't grey
they can't grey 	I can't be greying
you can't be greying
she can't be greying
we can't be greying
you can't be greying
they can't be greying	I can't have greyed
you can't have greyed
she can't have greyed
we can't have greyed
you can't have greyed
they can't have greyed	I can't have been greying
you can't have been greying
she can't have been greying
we can't have been greying
you can't have been greying
they can't have been greying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I grey?
can you grey?
can she grey?
can we grey?
can you grey?
can they grey? 	can I be greying?
can you be greying?
can she be greying?
can we be greying?
can you be greying?
can they be greying? 	can I have greyed?
can you have greyed?
can she have greyed?
can we have greyed?
can you have greyed?
can they have greyed? 	can I have been greying?
can you have been greying?
can she have been greying?
can we have been greying?
can you have been greying?
can they have been greying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I grey?
can't you grey?
can't she grey?
can't we grey?
can't you grey?
can't they grey? 	can't I be greying?
can't you be greying?
can't she be greying?
can't we be greying?
can't you be greying?
can't they be greying? 	can't I have greyed?
can't you have greyed?
can't she have greyed?
can't we have greyed?
can't you have greyed?
can't they have greyed? 	can't I have been greying?
can't you have been greying?
can't she have been greying?
can't we have been greying?
can't you have been greying?
can't they have been greying?