can lisp
Regular verb: lisp - lisped- lisped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can lisp
you can lisp
she can lisp
we can lisp
you can lisp
they can lisp 	I can be lisping
you can be lisping
she can be lisping
we can be lisping
you can be lisping
they can be lisping	I can have lisped
you can have lisped
she can have lisped
we can have lisped
you can have lisped
they can have lisped	I can have been lisping
you can have been lisping
she can have been lisping
we can have been lisping
you can have been lisping
they can have been lisping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't lisp
you can't lisp
she can't lisp
we can't lisp
you can't lisp
they can't lisp 	I can't be lisping
you can't be lisping
she can't be lisping
we can't be lisping
you can't be lisping
they can't be lisping	I can't have lisped
you can't have lisped
she can't have lisped
we can't have lisped
you can't have lisped
they can't have lisped	I can't have been lisping
you can't have been lisping
she can't have been lisping
we can't have been lisping
you can't have been lisping
they can't have been lisping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I lisp?
can you lisp?
can she lisp?
can we lisp?
can you lisp?
can they lisp? 	can I be lisping?
can you be lisping?
can she be lisping?
can we be lisping?
can you be lisping?
can they be lisping? 	can I have lisped?
can you have lisped?
can she have lisped?
can we have lisped?
can you have lisped?
can they have lisped? 	can I have been lisping?
can you have been lisping?
can she have been lisping?
can we have been lisping?
can you have been lisping?
can they have been lisping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I lisp?
can't you lisp?
can't she lisp?
can't we lisp?
can't you lisp?
can't they lisp? 	can't I be lisping?
can't you be lisping?
can't she be lisping?
can't we be lisping?
can't you be lisping?
can't they be lisping? 	can't I have lisped?
can't you have lisped?
can't she have lisped?
can't we have lisped?
can't you have lisped?
can't they have lisped? 	can't I have been lisping?
can't you have been lisping?
can't she have been lisping?
can't we have been lisping?
can't you have been lisping?
can't they have been lisping?