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 couldn't splutter you couldn't splutter she 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 she 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 she 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 she 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 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
couldn't I splutter? couldn't you splutter? couldn't she 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 she 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 she 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 she have been spluttering? couldn't we have been spluttering? couldn't you have been spluttering? couldn't they have been spluttering?