can busk
Regular verb: busk - busked- busked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can busk
you can busk
she can busk
we can busk
you can busk
they can busk 	I can be busking
you can be busking
she can be busking
we can be busking
you can be busking
they can be busking	I can have busked
you can have busked
she can have busked
we can have busked
you can have busked
they can have busked	I can have been busking
you can have been busking
she can have been busking
we can have been busking
you can have been busking
they can have been busking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't busk
you can't busk
she can't busk
we can't busk
you can't busk
they can't busk 	I can't be busking
you can't be busking
she can't be busking
we can't be busking
you can't be busking
they can't be busking	I can't have busked
you can't have busked
she can't have busked
we can't have busked
you can't have busked
they can't have busked	I can't have been busking
you can't have been busking
she can't have been busking
we can't have been busking
you can't have been busking
they can't have been busking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I busk?
can you busk?
can she busk?
can we busk?
can you busk?
can they busk? 	can I be busking?
can you be busking?
can she be busking?
can we be busking?
can you be busking?
can they be busking? 	can I have busked?
can you have busked?
can she have busked?
can we have busked?
can you have busked?
can they have busked? 	can I have been busking?
can you have been busking?
can she have been busking?
can we have been busking?
can you have been busking?
can they have been busking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I busk?
can't you busk?
can't she busk?
can't we busk?
can't you busk?
can't they busk? 	can't I be busking?
can't you be busking?
can't she be busking?
can't we be busking?
can't you be busking?
can't they be busking? 	can't I have busked?
can't you have busked?
can't she have busked?
can't we have busked?
can't you have busked?
can't they have busked? 	can't I have been busking?
can't you have been busking?
can't she have been busking?
can't we have been busking?
can't you have been busking?
can't they have been busking?