I can sunder you can sunder she can sunder we can sunder you can sunder they can sunder
V-ing form
I can be sundering you can be sundering she can be sundering we can be sundering you can be sundering they can be sundering
Perfect
I can have sundered you can have sundered she can have sundered we can have sundered you can have sundered they can have sundered
V-ing perfect
I can have been sundering you can have been sundering she can have been sundering we can have been sundering you can have been sundering they can have been sundering
Negation
Simple form
I can't sunder you can't sunder she can't sunder we can't sunder you can't sunder they can't sunder
V-ing form
I can't be sundering you can't be sundering she can't be sundering we can't be sundering you can't be sundering they can't be sundering
Perfect
I can't have sundered you can't have sundered she can't have sundered we can't have sundered you can't have sundered they can't have sundered
V-ing perfect
I can't have been sundering you can't have been sundering she can't have been sundering we can't have been sundering you can't have been sundering they can't have been sundering
Interrogative form
Simple form
can I sunder? can you sunder? can she sunder? can we sunder? can you sunder? can they sunder?
V-ing form
can I be sundering? can you be sundering? can she be sundering? can we be sundering? can you be sundering? can they be sundering?
Perfect
can I have sundered? can you have sundered? can she have sundered? can we have sundered? can you have sundered? can they have sundered?
V-ing perfect
can I have been sundering? can you have been sundering? can she have been sundering? can we have been sundering? can you have been sundering? can they have been sundering?
Interro-negative form
Simple form
can't I sunder? can't you sunder? can't she sunder? can't we sunder? can't you sunder? can't they sunder?
V-ing form
can't I be sundering? can't you be sundering? can't she be sundering? can't we be sundering? can't you be sundering? can't they be sundering?
Perfect
can't I have sundered? can't you have sundered? can't she have sundered? can't we have sundered? can't you have sundered? can't they have sundered?
V-ing perfect
can't I have been sundering? can't you have been sundering? can't she have been sundering? can't we have been sundering? can't you have been sundering? can't they have been sundering?