must lisp
Verbo regular: lisp - lisped- lisped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must lisp
you must lisp
he must lisp
we must lisp
you must lisp
they must lisp 	I must be lisping
you must be lisping
he must be lisping
we must be lisping
you must be lisping
they must be lisping	I must have lisped
you must have lisped
he must have lisped
we must have lisped
you must have lisped
they must have lisped	I must have been lisping
you must have been lisping
he must have been lisping
we must have been lisping
you must have been lisping
they must have been lisping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't lisp
you mustn't lisp
he mustn't lisp
we mustn't lisp
you mustn't lisp
they mustn't lisp 	I mustn't be lisping
you mustn't be lisping
he mustn't be lisping
we mustn't be lisping
you mustn't be lisping
they mustn't be lisping	I mustn't have lisped
you mustn't have lisped
he mustn't have lisped
we mustn't have lisped
you mustn't have lisped
they mustn't have lisped	I mustn't have been lisping
you mustn't have been lisping
he mustn't have been lisping
we mustn't have been lisping
you mustn't have been lisping
they mustn't have been lisping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I lisp?
must you lisp?
must he lisp?
must we lisp?
must you lisp?
must they lisp? 	must I be lisping?
must you be lisping?
must he be lisping?
must we be lisping?
must you be lisping?
must they be lisping? 	must I have lisped?
must you have lisped?
must he have lisped?
must we have lisped?
must you have lisped?
must they have lisped? 	must I have been lisping?
must you have been lisping?
must he have been lisping?
must we have been lisping?
must you have been lisping?
must they have been lisping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I lisp?
mustn't you lisp?
mustn't he lisp?
mustn't we lisp?
mustn't you lisp?
mustn't they lisp? 	mustn't I be lisping?
mustn't you be lisping?
mustn't he be lisping?
mustn't we be lisping?
mustn't you be lisping?
mustn't they be lisping? 	mustn't I have lisped?
mustn't you have lisped?
mustn't he have lisped?
mustn't we have lisped?
mustn't you have lisped?
mustn't they have lisped? 	mustn't I have been lisping?
mustn't you have been lisping?
mustn't he have been lisping?
mustn't we have been lisping?
mustn't you have been lisping?
mustn't they have been lisping?