can roast
Regular verb: roast - roasted- roasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can roast
you can roast
she can roast
we can roast
you can roast
they can roast 	I can be roasting
you can be roasting
she can be roasting
we can be roasting
you can be roasting
they can be roasting	I can have roasted
you can have roasted
she can have roasted
we can have roasted
you can have roasted
they can have roasted	I can have been roasting
you can have been roasting
she can have been roasting
we can have been roasting
you can have been roasting
they can have been roasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't roast
you can't roast
she can't roast
we can't roast
you can't roast
they can't roast 	I can't be roasting
you can't be roasting
she can't be roasting
we can't be roasting
you can't be roasting
they can't be roasting	I can't have roasted
you can't have roasted
she can't have roasted
we can't have roasted
you can't have roasted
they can't have roasted	I can't have been roasting
you can't have been roasting
she can't have been roasting
we can't have been roasting
you can't have been roasting
they can't have been roasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I roast?
can you roast?
can she roast?
can we roast?
can you roast?
can they roast? 	can I be roasting?
can you be roasting?
can she be roasting?
can we be roasting?
can you be roasting?
can they be roasting? 	can I have roasted?
can you have roasted?
can she have roasted?
can we have roasted?
can you have roasted?
can they have roasted? 	can I have been roasting?
can you have been roasting?
can she have been roasting?
can we have been roasting?
can you have been roasting?
can they have been roasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I roast?
can't you roast?
can't she roast?
can't we roast?
can't you roast?
can't they roast? 	can't I be roasting?
can't you be roasting?
can't she be roasting?
can't we be roasting?
can't you be roasting?
can't they be roasting? 	can't I have roasted?
can't you have roasted?
can't she have roasted?
can't we have roasted?
can't you have roasted?
can't they have roasted? 	can't I have been roasting?
can't you have been roasting?
can't she have been roasting?
can't we have been roasting?
can't you have been roasting?
can't they have been roasting?