I can shudder you can shudder he can shudder we can shudder you can shudder they can shudder
V-ing form
I can be shuddering you can be shuddering he can be shuddering we can be shuddering you can be shuddering they can be shuddering
Perfect
I can have shuddered you can have shuddered he can have shuddered we can have shuddered you can have shuddered they can have shuddered
V-ing perfect
I can have been shuddering you can have been shuddering he can have been shuddering we can have been shuddering you can have been shuddering they can have been shuddering
Negation
Simple form
I can't shudder you can't shudder he can't shudder we can't shudder you can't shudder they can't shudder
V-ing form
I can't be shuddering you can't be shuddering he can't be shuddering we can't be shuddering you can't be shuddering they can't be shuddering
Perfect
I can't have shuddered you can't have shuddered he can't have shuddered we can't have shuddered you can't have shuddered they can't have shuddered
V-ing perfect
I can't have been shuddering you can't have been shuddering he can't have been shuddering we can't have been shuddering you can't have been shuddering they can't have been shuddering
Interrogative form
Simple form
can I shudder? can you shudder? can he shudder? can we shudder? can you shudder? can they shudder?
V-ing form
can I be shuddering? can you be shuddering? can he be shuddering? can we be shuddering? can you be shuddering? can they be shuddering?
Perfect
can I have shuddered? can you have shuddered? can he have shuddered? can we have shuddered? can you have shuddered? can they have shuddered?
V-ing perfect
can I have been shuddering? can you have been shuddering? can he have been shuddering? can we have been shuddering? can you have been shuddering? can they have been shuddering?
Interro-negative form
Simple form
can't I shudder? can't you shudder? can't he shudder? can't we shudder? can't you shudder? can't they shudder?
V-ing form
can't I be shuddering? can't you be shuddering? can't he be shuddering? can't we be shuddering? can't you be shuddering? can't they be shuddering?
Perfect
can't I have shuddered? can't you have shuddered? can't he have shuddered? can't we have shuddered? can't you have shuddered? can't they have shuddered?
V-ing perfect
can't I have been shuddering? can't you have been shuddering? can't he have been shuddering? can't we have been shuddering? can't you have been shuddering? can't they have been shuddering?