English verb conjugation
COULD SPLUTTER

Regular verb: splutter - spluttered - spluttered

Affirmation

Simple form	V-ing form
I could splutter you could splutter he could splutter we could splutter you could splutter they could splutter	I could be spluttering you could be spluttering he 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 he 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 he 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 couldn't splutter you couldn't splutter he couldn't splutter we couldn't splutter you couldn't splutter they couldn't splutter	I couldn't be spluttering you couldn't be spluttering he couldn't be spluttering we couldn't be spluttering you couldn't be spluttering they couldn't be spluttering
Perfect	V-ing perfect
I couldn't have spluttered you couldn't have spluttered he couldn't have spluttered we couldn't have spluttered you couldn't have spluttered they couldn't have spluttered	I couldn't have been spluttering you couldn't have been spluttering he couldn't have been spluttering we couldn't have been spluttering you couldn't have been spluttering they couldn't have been spluttering

Interrogative form

Simple form	V-ing form
could I splutter? could you splutter? could he splutter? could we splutter? could you splutter? could they splutter?	could I be spluttering? could you be spluttering? could he 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 he 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 he 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
couldn't I splutter? couldn't you splutter? couldn't he splutter? couldn't we splutter? couldn't you splutter? couldn't they splutter?	couldn't I be spluttering? couldn't you be spluttering? couldn't he be spluttering? couldn't we be spluttering? couldn't you be spluttering? couldn't they be spluttering?
Perfect	V-ing perfect
couldn't I have spluttered? couldn't you have spluttered? couldn't he have spluttered? couldn't we have spluttered? couldn't you have spluttered? couldn't they have spluttered?	couldn't I have been spluttering? couldn't you have been spluttering? couldn't he have been spluttering? couldn't we have been spluttering? couldn't you have been spluttering? couldn't they have been spluttering?