English verb conjugation
COULD TATTER

Regular verb: tatter - tattered - tattered

Affirmation

Simple form	V-ing form
I could tatter you could tatter he could tatter we could tatter you could tatter they could tatter	I could be tattering you could be tattering he could be tattering we could be tattering you could be tattering they could be tattering
Perfect	V-ing perfect
I could have tattered you could have tattered he could have tattered we could have tattered you could have tattered they could have tattered	I could have been tattering you could have been tattering he could have been tattering we could have been tattering you could have been tattering they could have been tattering

Negation

Simple form	V-ing form
I couldn't tatter you couldn't tatter he couldn't tatter we couldn't tatter you couldn't tatter they couldn't tatter	I couldn't be tattering you couldn't be tattering he couldn't be tattering we couldn't be tattering you couldn't be tattering they couldn't be tattering
Perfect	V-ing perfect
I couldn't have tattered you couldn't have tattered he couldn't have tattered we couldn't have tattered you couldn't have tattered they couldn't have tattered	I couldn't have been tattering you couldn't have been tattering he couldn't have been tattering we couldn't have been tattering you couldn't have been tattering they couldn't have been tattering

Interrogative form

Simple form	V-ing form
could I tatter? could you tatter? could he tatter? could we tatter? could you tatter? could they tatter?	could I be tattering? could you be tattering? could he be tattering? could we be tattering? could you be tattering? could they be tattering?
Perfect	V-ing perfect
could I have tattered? could you have tattered? could he have tattered? could we have tattered? could you have tattered? could they have tattered?	could I have been tattering? could you have been tattering? could he have been tattering? could we have been tattering? could you have been tattering? could they have been tattering?

Interro-negative form

Simple form	V-ing form
couldn't I tatter? couldn't you tatter? couldn't he tatter? couldn't we tatter? couldn't you tatter? couldn't they tatter?	couldn't I be tattering? couldn't you be tattering? couldn't he be tattering? couldn't we be tattering? couldn't you be tattering? couldn't they be tattering?
Perfect	V-ing perfect
couldn't I have tattered? couldn't you have tattered? couldn't he have tattered? couldn't we have tattered? couldn't you have tattered? couldn't they have tattered?	couldn't I have been tattering? couldn't you have been tattering? couldn't he have been tattering? couldn't we have been tattering? couldn't you have been tattering? couldn't they have been tattering?