must teeter
Verbo regular: teeter - teetered- teetered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must teeter
you must teeter
she must teeter
we must teeter
you must teeter
they must teeter 	I must be teetering
you must be teetering
she must be teetering
we must be teetering
you must be teetering
they must be teetering	I must have teetered
you must have teetered
she must have teetered
we must have teetered
you must have teetered
they must have teetered	I must have been teetering
you must have been teetering
she must have been teetering
we must have been teetering
you must have been teetering
they must have been teetering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not teeter
you must not teeter
she must not teeter
we must not teeter
you must not teeter
they must not teeter 	I must not be teetering
you must not be teetering
she must not be teetering
we must not be teetering
you must not be teetering
they must not be teetering	I must not have teetered
you must not have teetered
she must not have teetered
we must not have teetered
you must not have teetered
they must not have teetered	I must not have been teetering
you must not have been teetering
she must not have been teetering
we must not have been teetering
you must not have been teetering
they must not have been teetering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I teeter?
must you teeter?
must she teeter?
must we teeter?
must you teeter?
must they teeter? 	must I be teetering?
must you be teetering?
must she be teetering?
must we be teetering?
must you be teetering?
must they be teetering? 	must I have teetered?
must you have teetered?
must she have teetered?
must we have teetered?
must you have teetered?
must they have teetered? 	must I have been teetering?
must you have been teetering?
must she have been teetering?
must we have been teetering?
must you have been teetering?
must they have been teetering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not teeter?
must you not teeter?
must she not teeter?
must we not teeter?
must you not teeter?
must they not teeter? 	must I not be teetering?
must you not be teetering?
must she not be teetering?
must we not be teetering?
must you not be teetering?
must they not be teetering? 	must I not have teetered?
must you not have teetered?
must she not have teetered?
must we not have teetered?
must you not have teetered?
must they not have teetered? 	must I not have been teetering?
must you not have been teetering?
must she not have been teetering?
must we not have been teetering?
must you not have been teetering?
must they not have been teetering?