must incrust
Verbo regular: incrust - incrusted- incrusted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must incrust
you must incrust
she must incrust
we must incrust
you must incrust
they must incrust 	I must be incrusting
you must be incrusting
she must be incrusting
we must be incrusting
you must be incrusting
they must be incrusting	I must have incrusted
you must have incrusted
she must have incrusted
we must have incrusted
you must have incrusted
they must have incrusted	I must have been incrusting
you must have been incrusting
she must have been incrusting
we must have been incrusting
you must have been incrusting
they must have been incrusting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not incrust
you must not incrust
she must not incrust
we must not incrust
you must not incrust
they must not incrust 	I must not be incrusting
you must not be incrusting
she must not be incrusting
we must not be incrusting
you must not be incrusting
they must not be incrusting	I must not have incrusted
you must not have incrusted
she must not have incrusted
we must not have incrusted
you must not have incrusted
they must not have incrusted	I must not have been incrusting
you must not have been incrusting
she must not have been incrusting
we must not have been incrusting
you must not have been incrusting
they must not have been incrusting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I incrust?
must you incrust?
must she incrust?
must we incrust?
must you incrust?
must they incrust? 	must I be incrusting?
must you be incrusting?
must she be incrusting?
must we be incrusting?
must you be incrusting?
must they be incrusting? 	must I have incrusted?
must you have incrusted?
must she have incrusted?
must we have incrusted?
must you have incrusted?
must they have incrusted? 	must I have been incrusting?
must you have been incrusting?
must she have been incrusting?
must we have been incrusting?
must you have been incrusting?
must they have been incrusting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not incrust?
must you not incrust?
must she not incrust?
must we not incrust?
must you not incrust?
must they not incrust? 	must I not be incrusting?
must you not be incrusting?
must she not be incrusting?
must we not be incrusting?
must you not be incrusting?
must they not be incrusting? 	must I not have incrusted?
must you not have incrusted?
must she not have incrusted?
must we not have incrusted?
must you not have incrusted?
must they not have incrusted? 	must I not have been incrusting?
must you not have been incrusting?
must she not have been incrusting?
must we not have been incrusting?
must you not have been incrusting?
must they not have been incrusting?