could teeter
Regular verb: teeter - teetered- teetered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could teeter
you could teeter
he could teeter
we could teeter
you could teeter
they could teeter 	I could be teetering
you could be teetering
he could be teetering
we could be teetering
you could be teetering
they could be teetering	I could have teetered
you could have teetered
he could have teetered
we could have teetered
you could have teetered
they could have teetered	I could have been teetering
you could have been teetering
he could have been teetering
we could have been teetering
you could have been teetering
they could have been teetering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't teeter
you couldn't teeter
he couldn't teeter
we couldn't teeter
you couldn't teeter
they couldn't teeter 	I couldn't be teetering
you couldn't be teetering
he couldn't be teetering
we couldn't be teetering
you couldn't be teetering
they couldn't be teetering	I couldn't have teetered
you couldn't have teetered
he couldn't have teetered
we couldn't have teetered
you couldn't have teetered
they couldn't have teetered	I couldn't have been teetering
you couldn't have been teetering
he couldn't have been teetering
we couldn't have been teetering
you couldn't have been teetering
they couldn't have been teetering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I teeter?
could you teeter?
could he teeter?
could we teeter?
could you teeter?
could they teeter? 	could I be teetering?
could you be teetering?
could he be teetering?
could we be teetering?
could you be teetering?
could they be teetering? 	could I have teetered?
could you have teetered?
could he have teetered?
could we have teetered?
could you have teetered?
could they have teetered? 	could I have been teetering?
could you have been teetering?
could he have been teetering?
could we have been teetering?
could you have been teetering?
could they have been teetering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I teeter?
couldn't you teeter?
couldn't he teeter?
couldn't we teeter?
couldn't you teeter?
couldn't they teeter? 	couldn't I be teetering?
couldn't you be teetering?
couldn't he be teetering?
couldn't we be teetering?
couldn't you be teetering?
couldn't they be teetering? 	couldn't I have teetered?
couldn't you have teetered?
couldn't he have teetered?
couldn't we have teetered?
couldn't you have teetered?
couldn't they have teetered? 	couldn't I have been teetering?
couldn't you have been teetering?
couldn't he have been teetering?
couldn't we have been teetering?
couldn't you have been teetering?
couldn't they have been teetering?