must lasso
Verbo regular: lasso - lassoed- lassoed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must lasso
you must lasso
she must lasso
we must lasso
you must lasso
they must lasso 	I must be lassoing
you must be lassoing
she must be lassoing
we must be lassoing
you must be lassoing
they must be lassoing	I must have lassoed
you must have lassoed
she must have lassoed
we must have lassoed
you must have lassoed
they must have lassoed	I must have been lassoing
you must have been lassoing
she must have been lassoing
we must have been lassoing
you must have been lassoing
they must have been lassoing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not lasso
you must not lasso
she must not lasso
we must not lasso
you must not lasso
they must not lasso 	I must not be lassoing
you must not be lassoing
she must not be lassoing
we must not be lassoing
you must not be lassoing
they must not be lassoing	I must not have lassoed
you must not have lassoed
she must not have lassoed
we must not have lassoed
you must not have lassoed
they must not have lassoed	I must not have been lassoing
you must not have been lassoing
she must not have been lassoing
we must not have been lassoing
you must not have been lassoing
they must not have been lassoing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I lasso?
must you lasso?
must she lasso?
must we lasso?
must you lasso?
must they lasso? 	must I be lassoing?
must you be lassoing?
must she be lassoing?
must we be lassoing?
must you be lassoing?
must they be lassoing? 	must I have lassoed?
must you have lassoed?
must she have lassoed?
must we have lassoed?
must you have lassoed?
must they have lassoed? 	must I have been lassoing?
must you have been lassoing?
must she have been lassoing?
must we have been lassoing?
must you have been lassoing?
must they have been lassoing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not lasso?
must you not lasso?
must she not lasso?
must we not lasso?
must you not lasso?
must they not lasso? 	must I not be lassoing?
must you not be lassoing?
must she not be lassoing?
must we not be lassoing?
must you not be lassoing?
must they not be lassoing? 	must I not have lassoed?
must you not have lassoed?
must she not have lassoed?
must we not have lassoed?
must you not have lassoed?
must they not have lassoed? 	must I not have been lassoing?
must you not have been lassoing?
must she not have been lassoing?
must we not have been lassoing?
must you not have been lassoing?
must they not have been lassoing?