English verb conjugation
COULD LIE

Irregular verb: lie - lay - lain

Affirmation

Simple form	V-ing form
I could lie you could lie he could lie we could lie you could lie they could lie	I could be lying you could be lying he could be lying we could be lying you could be lying they could be lying
Perfect	V-ing perfect
I could have lain you could have lain he could have lain we could have lain you could have lain they could have lain	I could have been lying you could have been lying he could have been lying we could have been lying you could have been lying they could have been lying

Negation

Simple form	V-ing form
I couldn't lie you couldn't lie he couldn't lie we couldn't lie you couldn't lie they couldn't lie	I couldn't be lying you couldn't be lying he couldn't be lying we couldn't be lying you couldn't be lying they couldn't be lying
Perfect	V-ing perfect
I couldn't have lain you couldn't have lain he couldn't have lain we couldn't have lain you couldn't have lain they couldn't have lain	I couldn't have been lying you couldn't have been lying he couldn't have been lying we couldn't have been lying you couldn't have been lying they couldn't have been lying

Interrogative form

Simple form	V-ing form
could I lie? could you lie? could he lie? could we lie? could you lie? could they lie?	could I be lying? could you be lying? could he be lying? could we be lying? could you be lying? could they be lying?
Perfect	V-ing perfect
could I have lain? could you have lain? could he have lain? could we have lain? could you have lain? could they have lain?	could I have been lying? could you have been lying? could he have been lying? could we have been lying? could you have been lying? could they have been lying?

Interro-negative form

Simple form	V-ing form
couldn't I lie? couldn't you lie? couldn't he lie? couldn't we lie? couldn't you lie? couldn't they lie?	couldn't I be lying? couldn't you be lying? couldn't he be lying? couldn't we be lying? couldn't you be lying? couldn't they be lying?
Perfect	V-ing perfect
couldn't I have lain? couldn't you have lain? couldn't he have lain? couldn't we have lain? couldn't you have lain? couldn't they have lain?	couldn't I have been lying? couldn't you have been lying? couldn't he have been lying? couldn't we have been lying? couldn't you have been lying? couldn't they have been lying?