can spacewalk
Regular verb: spacewalk - spacewalked- spacewalked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can spacewalk
you can spacewalk
he can spacewalk
we can spacewalk
you can spacewalk
they can spacewalk 	I can be spacewalking
you can be spacewalking
he can be spacewalking
we can be spacewalking
you can be spacewalking
they can be spacewalking	I can have spacewalked
you can have spacewalked
he can have spacewalked
we can have spacewalked
you can have spacewalked
they can have spacewalked	I can have been spacewalking
you can have been spacewalking
he can have been spacewalking
we can have been spacewalking
you can have been spacewalking
they can have been spacewalking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't spacewalk
you can't spacewalk
he can't spacewalk
we can't spacewalk
you can't spacewalk
they can't spacewalk 	I can't be spacewalking
you can't be spacewalking
he can't be spacewalking
we can't be spacewalking
you can't be spacewalking
they can't be spacewalking	I can't have spacewalked
you can't have spacewalked
he can't have spacewalked
we can't have spacewalked
you can't have spacewalked
they can't have spacewalked	I can't have been spacewalking
you can't have been spacewalking
he can't have been spacewalking
we can't have been spacewalking
you can't have been spacewalking
they can't have been spacewalking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I spacewalk?
can you spacewalk?
can he spacewalk?
can we spacewalk?
can you spacewalk?
can they spacewalk? 	can I be spacewalking?
can you be spacewalking?
can he be spacewalking?
can we be spacewalking?
can you be spacewalking?
can they be spacewalking? 	can I have spacewalked?
can you have spacewalked?
can he have spacewalked?
can we have spacewalked?
can you have spacewalked?
can they have spacewalked? 	can I have been spacewalking?
can you have been spacewalking?
can he have been spacewalking?
can we have been spacewalking?
can you have been spacewalking?
can they have been spacewalking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I spacewalk?
can't you spacewalk?
can't he spacewalk?
can't we spacewalk?
can't you spacewalk?
can't they spacewalk? 	can't I be spacewalking?
can't you be spacewalking?
can't he be spacewalking?
can't we be spacewalking?
can't you be spacewalking?
can't they be spacewalking? 	can't I have spacewalked?
can't you have spacewalked?
can't he have spacewalked?
can't we have spacewalked?
can't you have spacewalked?
can't they have spacewalked? 	can't I have been spacewalking?
can't you have been spacewalking?
can't he have been spacewalking?
can't we have been spacewalking?
can't you have been spacewalking?
can't they have been spacewalking?