must quiver
Verbo regolare: quiver - quivered- quivered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must quiver
you must quiver
she must quiver
we must quiver
you must quiver
they must quiver 	I must be quivering
you must be quivering
she must be quivering
we must be quivering
you must be quivering
they must be quivering	I must have quivered
you must have quivered
she must have quivered
we must have quivered
you must have quivered
they must have quivered	I must have been quivering
you must have been quivering
she must have been quivering
we must have been quivering
you must have been quivering
they must have been quivering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not quiver
you must not quiver
she must not quiver
we must not quiver
you must not quiver
they must not quiver 	I must not be quivering
you must not be quivering
she must not be quivering
we must not be quivering
you must not be quivering
they must not be quivering	I must not have quivered
you must not have quivered
she must not have quivered
we must not have quivered
you must not have quivered
they must not have quivered	I must not have been quivering
you must not have been quivering
she must not have been quivering
we must not have been quivering
you must not have been quivering
they must not have been quivering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I quiver?
must you quiver?
must she quiver?
must we quiver?
must you quiver?
must they quiver? 	must I be quivering?
must you be quivering?
must she be quivering?
must we be quivering?
must you be quivering?
must they be quivering? 	must I have quivered?
must you have quivered?
must she have quivered?
must we have quivered?
must you have quivered?
must they have quivered? 	must I have been quivering?
must you have been quivering?
must she have been quivering?
must we have been quivering?
must you have been quivering?
must they have been quivering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not quiver?
must you not quiver?
must she not quiver?
must we not quiver?
must you not quiver?
must they not quiver? 	must I not be quivering?
must you not be quivering?
must she not be quivering?
must we not be quivering?
must you not be quivering?
must they not be quivering? 	must I not have quivered?
must you not have quivered?
must she not have quivered?
must we not have quivered?
must you not have quivered?
must they not have quivered? 	must I not have been quivering?
must you not have been quivering?
must she not have been quivering?
must we not have been quivering?
must you not have been quivering?
must they not have been quivering?