must solve
Verbo regular: solve - solved- solved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must solve
you must solve
she must solve
we must solve
you must solve
they must solve 	I must be solving
you must be solving
she must be solving
we must be solving
you must be solving
they must be solving	I must have solved
you must have solved
she must have solved
we must have solved
you must have solved
they must have solved	I must have been solving
you must have been solving
she must have been solving
we must have been solving
you must have been solving
they must have been solving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not solve
you must not solve
she must not solve
we must not solve
you must not solve
they must not solve 	I must not be solving
you must not be solving
she must not be solving
we must not be solving
you must not be solving
they must not be solving	I must not have solved
you must not have solved
she must not have solved
we must not have solved
you must not have solved
they must not have solved	I must not have been solving
you must not have been solving
she must not have been solving
we must not have been solving
you must not have been solving
they must not have been solving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I solve?
must you solve?
must she solve?
must we solve?
must you solve?
must they solve? 	must I be solving?
must you be solving?
must she be solving?
must we be solving?
must you be solving?
must they be solving? 	must I have solved?
must you have solved?
must she have solved?
must we have solved?
must you have solved?
must they have solved? 	must I have been solving?
must you have been solving?
must she have been solving?
must we have been solving?
must you have been solving?
must they have been solving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not solve?
must you not solve?
must she not solve?
must we not solve?
must you not solve?
must they not solve? 	must I not be solving?
must you not be solving?
must she not be solving?
must we not be solving?
must you not be solving?
must they not be solving? 	must I not have solved?
must you not have solved?
must she not have solved?
must we not have solved?
must you not have solved?
must they not have solved? 	must I not have been solving?
must you not have been solving?
must she not have been solving?
must we not have been solving?
must you not have been solving?
must they not have been solving?