English verb conjugation
COULD PITTERPATTER

Regular verb: pitterpatter - pitterpattered - pitterpattered

Affirmation

Simple form	V-ing form
I could pitterpatter you could pitterpatter he could pitterpatter we could pitterpatter you could pitterpatter they could pitterpatter	I could be pitterpattering you could be pitterpattering he could be pitterpattering we could be pitterpattering you could be pitterpattering they could be pitterpattering
Perfect	V-ing perfect
I could have pitterpattered you could have pitterpattered he could have pitterpattered we could have pitterpattered you could have pitterpattered they could have pitterpattered	I could have been pitterpattering you could have been pitterpattering he could have been pitterpattering we could have been pitterpattering you could have been pitterpattering they could have been pitterpattering

Negation

Simple form	V-ing form
I couldn't pitterpatter you couldn't pitterpatter he couldn't pitterpatter we couldn't pitterpatter you couldn't pitterpatter they couldn't pitterpatter	I couldn't be pitterpattering you couldn't be pitterpattering he couldn't be pitterpattering we couldn't be pitterpattering you couldn't be pitterpattering they couldn't be pitterpattering
Perfect	V-ing perfect
I couldn't have pitterpattered you couldn't have pitterpattered he couldn't have pitterpattered we couldn't have pitterpattered you couldn't have pitterpattered they couldn't have pitterpattered	I couldn't have been pitterpattering you couldn't have been pitterpattering he couldn't have been pitterpattering we couldn't have been pitterpattering you couldn't have been pitterpattering they couldn't have been pitterpattering

Interrogative form

Simple form	V-ing form
could I pitterpatter? could you pitterpatter? could he pitterpatter? could we pitterpatter? could you pitterpatter? could they pitterpatter?	could I be pitterpattering? could you be pitterpattering? could he be pitterpattering? could we be pitterpattering? could you be pitterpattering? could they be pitterpattering?
Perfect	V-ing perfect
could I have pitterpattered? could you have pitterpattered? could he have pitterpattered? could we have pitterpattered? could you have pitterpattered? could they have pitterpattered?	could I have been pitterpattering? could you have been pitterpattering? could he have been pitterpattering? could we have been pitterpattering? could you have been pitterpattering? could they have been pitterpattering?

Interro-negative form

Simple form	V-ing form
couldn't I pitterpatter? couldn't you pitterpatter? couldn't he pitterpatter? couldn't we pitterpatter? couldn't you pitterpatter? couldn't they pitterpatter?	couldn't I be pitterpattering? couldn't you be pitterpattering? couldn't he be pitterpattering? couldn't we be pitterpattering? couldn't you be pitterpattering? couldn't they be pitterpattering?
Perfect	V-ing perfect
couldn't I have pitterpattered? couldn't you have pitterpattered? couldn't he have pitterpattered? couldn't we have pitterpattered? couldn't you have pitterpattered? couldn't they have pitterpattered?	couldn't I have been pitterpattering? couldn't you have been pitterpattering? couldn't he have been pitterpattering? couldn't we have been pitterpattering? couldn't you have been pitterpattering? couldn't they have been pitterpattering?