I can row you can row she can row we can row you can row they can row
V-ing form
I can be rowing you can be rowing she can be rowing we can be rowing you can be rowing they can be rowing
Perfect
I can have rowed you can have rowed she can have rowed we can have rowed you can have rowed they can have rowed
V-ing perfect
I can have been rowing you can have been rowing she can have been rowing we can have been rowing you can have been rowing they can have been rowing
Negation
Simple form
I can't row you can't row she can't row we can't row you can't row they can't row
V-ing form
I can't be rowing you can't be rowing she can't be rowing we can't be rowing you can't be rowing they can't be rowing
Perfect
I can't have rowed you can't have rowed she can't have rowed we can't have rowed you can't have rowed they can't have rowed
V-ing perfect
I can't have been rowing you can't have been rowing she can't have been rowing we can't have been rowing you can't have been rowing they can't have been rowing
Interrogative form
Simple form
can I row? can you row? can she row? can we row? can you row? can they row?
V-ing form
can I be rowing? can you be rowing? can she be rowing? can we be rowing? can you be rowing? can they be rowing?
Perfect
can I have rowed? can you have rowed? can she have rowed? can we have rowed? can you have rowed? can they have rowed?
V-ing perfect
can I have been rowing? can you have been rowing? can she have been rowing? can we have been rowing? can you have been rowing? can they have been rowing?
Interro-negative form
Simple form
can't I row? can't you row? can't she row? can't we row? can't you row? can't they row?
V-ing form
can't I be rowing? can't you be rowing? can't she be rowing? can't we be rowing? can't you be rowing? can't they be rowing?
Perfect
can't I have rowed? can't you have rowed? can't she have rowed? can't we have rowed? can't you have rowed? can't they have rowed?
V-ing perfect
can't I have been rowing? can't you have been rowing? can't she have been rowing? can't we have been rowing? can't you have been rowing? can't they have been rowing?