can roost
Regular verb: roost - roosted- roosted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can roost
you can roost
she can roost
we can roost
you can roost
they can roost 	I can be roosting
you can be roosting
she can be roosting
we can be roosting
you can be roosting
they can be roosting	I can have roosted
you can have roosted
she can have roosted
we can have roosted
you can have roosted
they can have roosted	I can have been roosting
you can have been roosting
she can have been roosting
we can have been roosting
you can have been roosting
they can have been roosting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't roost
you can't roost
she can't roost
we can't roost
you can't roost
they can't roost 	I can't be roosting
you can't be roosting
she can't be roosting
we can't be roosting
you can't be roosting
they can't be roosting	I can't have roosted
you can't have roosted
she can't have roosted
we can't have roosted
you can't have roosted
they can't have roosted	I can't have been roosting
you can't have been roosting
she can't have been roosting
we can't have been roosting
you can't have been roosting
they can't have been roosting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I roost?
can you roost?
can she roost?
can we roost?
can you roost?
can they roost? 	can I be roosting?
can you be roosting?
can she be roosting?
can we be roosting?
can you be roosting?
can they be roosting? 	can I have roosted?
can you have roosted?
can she have roosted?
can we have roosted?
can you have roosted?
can they have roosted? 	can I have been roosting?
can you have been roosting?
can she have been roosting?
can we have been roosting?
can you have been roosting?
can they have been roosting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I roost?
can't you roost?
can't she roost?
can't we roost?
can't you roost?
can't they roost? 	can't I be roosting?
can't you be roosting?
can't she be roosting?
can't we be roosting?
can't you be roosting?
can't they be roosting? 	can't I have roosted?
can't you have roosted?
can't she have roosted?
can't we have roosted?
can't you have roosted?
can't they have roosted? 	can't I have been roosting?
can't you have been roosting?
can't she have been roosting?
can't we have been roosting?
can't you have been roosting?
can't they have been roosting?