English verb conjugation
COULD SPLUTTER

Regular verb: splutter - spluttered - spluttered

Affirmation

Simple form	V-ing form
I could splutter you could splutter she could splutter we could splutter you could splutter they could splutter	I could be spluttering you could be spluttering she could be spluttering we could be spluttering you could be spluttering they could be spluttering
Perfect	V-ing perfect
I could have spluttered you could have spluttered she could have spluttered we could have spluttered you could have spluttered they could have spluttered	I could have been spluttering you could have been spluttering she could have been spluttering we could have been spluttering you could have been spluttering they could have been spluttering

Negation

Simple form	V-ing form
I could not splutter you could not splutter she could not splutter we could not splutter you could not splutter they could not splutter	I could not be spluttering you could not be spluttering she could not be spluttering we could not be spluttering you could not be spluttering they could not be spluttering
Perfect	V-ing perfect
I could not have spluttered you could not have spluttered she could not have spluttered we could not have spluttered you could not have spluttered they could not have spluttered	I could not have been spluttering you could not have been spluttering she could not have been spluttering we could not have been spluttering you could not have been spluttering they could not have been spluttering

Interrogative form

Simple form	V-ing form
could I splutter? could you splutter? could she splutter? could we splutter? could you splutter? could they splutter?	could I be spluttering? could you be spluttering? could she be spluttering? could we be spluttering? could you be spluttering? could they be spluttering?
Perfect	V-ing perfect
could I have spluttered? could you have spluttered? could she have spluttered? could we have spluttered? could you have spluttered? could they have spluttered?	could I have been spluttering? could you have been spluttering? could she have been spluttering? could we have been spluttering? could you have been spluttering? could they have been spluttering?

Interro-negative form

Simple form	V-ing form
could I not splutter? could you not splutter? could she not splutter? could we not splutter? could you not splutter? could they not splutter?	could I not be spluttering? could you not be spluttering? could she not be spluttering? could we not be spluttering? could you not be spluttering? could they not be spluttering?
Perfect	V-ing perfect
could I not have spluttered? could you not have spluttered? could she not have spluttered? could we not have spluttered? could you not have spluttered? could they not have spluttered?	could I not have been spluttering? could you not have been spluttering? could she not have been spluttering? could we not have been spluttering? could you not have been spluttering? could they not have been spluttering?