can clank
Regular verb: clank - clanked- clanked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can clank
you can clank
she can clank
we can clank
you can clank
they can clank 	I can be clanking
you can be clanking
she can be clanking
we can be clanking
you can be clanking
they can be clanking	I can have clanked
you can have clanked
she can have clanked
we can have clanked
you can have clanked
they can have clanked	I can have been clanking
you can have been clanking
she can have been clanking
we can have been clanking
you can have been clanking
they can have been clanking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't clank
you can't clank
she can't clank
we can't clank
you can't clank
they can't clank 	I can't be clanking
you can't be clanking
she can't be clanking
we can't be clanking
you can't be clanking
they can't be clanking	I can't have clanked
you can't have clanked
she can't have clanked
we can't have clanked
you can't have clanked
they can't have clanked	I can't have been clanking
you can't have been clanking
she can't have been clanking
we can't have been clanking
you can't have been clanking
they can't have been clanking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I clank?
can you clank?
can she clank?
can we clank?
can you clank?
can they clank? 	can I be clanking?
can you be clanking?
can she be clanking?
can we be clanking?
can you be clanking?
can they be clanking? 	can I have clanked?
can you have clanked?
can she have clanked?
can we have clanked?
can you have clanked?
can they have clanked? 	can I have been clanking?
can you have been clanking?
can she have been clanking?
can we have been clanking?
can you have been clanking?
can they have been clanking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I clank?
can't you clank?
can't she clank?
can't we clank?
can't you clank?
can't they clank? 	can't I be clanking?
can't you be clanking?
can't she be clanking?
can't we be clanking?
can't you be clanking?
can't they be clanking? 	can't I have clanked?
can't you have clanked?
can't she have clanked?
can't we have clanked?
can't you have clanked?
can't they have clanked? 	can't I have been clanking?
can't you have been clanking?
can't she have been clanking?
can't we have been clanking?
can't you have been clanking?
can't they have been clanking?