can blunder
Regular verb: blunder - blundered- blundered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can blunder
you can blunder
she can blunder
we can blunder
you can blunder
they can blunder 	I can be blundering
you can be blundering
she can be blundering
we can be blundering
you can be blundering
they can be blundering	I can have blundered
you can have blundered
she can have blundered
we can have blundered
you can have blundered
they can have blundered	I can have been blundering
you can have been blundering
she can have been blundering
we can have been blundering
you can have been blundering
they can have been blundering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't blunder
you can't blunder
she can't blunder
we can't blunder
you can't blunder
they can't blunder 	I can't be blundering
you can't be blundering
she can't be blundering
we can't be blundering
you can't be blundering
they can't be blundering	I can't have blundered
you can't have blundered
she can't have blundered
we can't have blundered
you can't have blundered
they can't have blundered	I can't have been blundering
you can't have been blundering
she can't have been blundering
we can't have been blundering
you can't have been blundering
they can't have been blundering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I blunder?
can you blunder?
can she blunder?
can we blunder?
can you blunder?
can they blunder? 	can I be blundering?
can you be blundering?
can she be blundering?
can we be blundering?
can you be blundering?
can they be blundering? 	can I have blundered?
can you have blundered?
can she have blundered?
can we have blundered?
can you have blundered?
can they have blundered? 	can I have been blundering?
can you have been blundering?
can she have been blundering?
can we have been blundering?
can you have been blundering?
can they have been blundering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I blunder?
can't you blunder?
can't she blunder?
can't we blunder?
can't you blunder?
can't they blunder? 	can't I be blundering?
can't you be blundering?
can't she be blundering?
can't we be blundering?
can't you be blundering?
can't they be blundering? 	can't I have blundered?
can't you have blundered?
can't she have blundered?
can't we have blundered?
can't you have blundered?
can't they have blundered? 	can't I have been blundering?
can't you have been blundering?
can't she have been blundering?
can't we have been blundering?
can't you have been blundering?
can't they have been blundering?