English verb conjugation
COULD PROGNOSTICATE

Regular verb: prognosticate - prognosticated - prognosticated

Affirmation

Simple form	V-ing form
I could prognosticate you could prognosticate he could prognosticate we could prognosticate you could prognosticate they could prognosticate	I could be prognosticating you could be prognosticating he could be prognosticating we could be prognosticating you could be prognosticating they could be prognosticating
Perfect	V-ing perfect
I could have prognosticated you could have prognosticated he could have prognosticated we could have prognosticated you could have prognosticated they could have prognosticated	I could have been prognosticating you could have been prognosticating he could have been prognosticating we could have been prognosticating you could have been prognosticating they could have been prognosticating

Negation

Simple form	V-ing form
I couldn't prognosticate you couldn't prognosticate he couldn't prognosticate we couldn't prognosticate you couldn't prognosticate they couldn't prognosticate	I couldn't be prognosticating you couldn't be prognosticating he couldn't be prognosticating we couldn't be prognosticating you couldn't be prognosticating they couldn't be prognosticating
Perfect	V-ing perfect
I couldn't have prognosticated you couldn't have prognosticated he couldn't have prognosticated we couldn't have prognosticated you couldn't have prognosticated they couldn't have prognosticated	I couldn't have been prognosticating you couldn't have been prognosticating he couldn't have been prognosticating we couldn't have been prognosticating you couldn't have been prognosticating they couldn't have been prognosticating

Interrogative form

Simple form	V-ing form
could I prognosticate? could you prognosticate? could he prognosticate? could we prognosticate? could you prognosticate? could they prognosticate?	could I be prognosticating? could you be prognosticating? could he be prognosticating? could we be prognosticating? could you be prognosticating? could they be prognosticating?
Perfect	V-ing perfect
could I have prognosticated? could you have prognosticated? could he have prognosticated? could we have prognosticated? could you have prognosticated? could they have prognosticated?	could I have been prognosticating? could you have been prognosticating? could he have been prognosticating? could we have been prognosticating? could you have been prognosticating? could they have been prognosticating?

Interro-negative form

Simple form	V-ing form
couldn't I prognosticate? couldn't you prognosticate? couldn't he prognosticate? couldn't we prognosticate? couldn't you prognosticate? couldn't they prognosticate?	couldn't I be prognosticating? couldn't you be prognosticating? couldn't he be prognosticating? couldn't we be prognosticating? couldn't you be prognosticating? couldn't they be prognosticating?
Perfect	V-ing perfect
couldn't I have prognosticated? couldn't you have prognosticated? couldn't he have prognosticated? couldn't we have prognosticated? couldn't you have prognosticated? couldn't they have prognosticated?	couldn't I have been prognosticating? couldn't you have been prognosticating? couldn't he have been prognosticating? couldn't we have been prognosticating? couldn't you have been prognosticating? couldn't they have been prognosticating?