English verb conjugation
COULD TEETER

Regular verb: teeter - teetered - teetered

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?