can shudder
Regular verb: shudder - shuddered- shuddered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can shudder
you can shudder
she can shudder
we can shudder
you can shudder
they can shudder 	I can be shuddering
you can be shuddering
she can be shuddering
we can be shuddering
you can be shuddering
they can be shuddering	I can have shuddered
you can have shuddered
she can have shuddered
we can have shuddered
you can have shuddered
they can have shuddered	I can have been shuddering
you can have been shuddering
she can have been shuddering
we can have been shuddering
you can have been shuddering
they can have been shuddering	

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

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