can plank
Regular verb: plank - planked- planked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can plank
you can plank
she can plank
we can plank
you can plank
they can plank 	I can be planking
you can be planking
she can be planking
we can be planking
you can be planking
they can be planking	I can have planked
you can have planked
she can have planked
we can have planked
you can have planked
they can have planked	I can have been planking
you can have been planking
she can have been planking
we can have been planking
you can have been planking
they can have been planking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't plank
you can't plank
she can't plank
we can't plank
you can't plank
they can't plank 	I can't be planking
you can't be planking
she can't be planking
we can't be planking
you can't be planking
they can't be planking	I can't have planked
you can't have planked
she can't have planked
we can't have planked
you can't have planked
they can't have planked	I can't have been planking
you can't have been planking
she can't have been planking
we can't have been planking
you can't have been planking
they can't have been planking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I plank?
can you plank?
can she plank?
can we plank?
can you plank?
can they plank? 	can I be planking?
can you be planking?
can she be planking?
can we be planking?
can you be planking?
can they be planking? 	can I have planked?
can you have planked?
can she have planked?
can we have planked?
can you have planked?
can they have planked? 	can I have been planking?
can you have been planking?
can she have been planking?
can we have been planking?
can you have been planking?
can they have been planking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I plank?
can't you plank?
can't she plank?
can't we plank?
can't you plank?
can't they plank? 	can't I be planking?
can't you be planking?
can't she be planking?
can't we be planking?
can't you be planking?
can't they be planking? 	can't I have planked?
can't you have planked?
can't she have planked?
can't we have planked?
can't you have planked?
can't they have planked? 	can't I have been planking?
can't you have been planking?
can't she have been planking?
can't we have been planking?
can't you have been planking?
can't they have been planking?