English verb conjugation
COULD DIN

Regular verb: din - dinned - dinned

Affirmation

Simple form	V-ing form
I could din you could din he could din we could din you could din they could din	I could be dinning you could be dinning he could be dinning we could be dinning you could be dinning they could be dinning
Perfect	V-ing perfect
I could have dinned you could have dinned he could have dinned we could have dinned you could have dinned they could have dinned	I could have been dinning you could have been dinning he could have been dinning we could have been dinning you could have been dinning they could have been dinning

Negation

Simple form	V-ing form
I couldn't din you couldn't din he couldn't din we couldn't din you couldn't din they couldn't din	I couldn't be dinning you couldn't be dinning he couldn't be dinning we couldn't be dinning you couldn't be dinning they couldn't be dinning
Perfect	V-ing perfect
I couldn't have dinned you couldn't have dinned he couldn't have dinned we couldn't have dinned you couldn't have dinned they couldn't have dinned	I couldn't have been dinning you couldn't have been dinning he couldn't have been dinning we couldn't have been dinning you couldn't have been dinning they couldn't have been dinning

Interrogative form

Simple form	V-ing form
could I din? could you din? could he din? could we din? could you din? could they din?	could I be dinning? could you be dinning? could he be dinning? could we be dinning? could you be dinning? could they be dinning?
Perfect	V-ing perfect
could I have dinned? could you have dinned? could he have dinned? could we have dinned? could you have dinned? could they have dinned?	could I have been dinning? could you have been dinning? could he have been dinning? could we have been dinning? could you have been dinning? could they have been dinning?

Interro-negative form

Simple form	V-ing form
couldn't I din? couldn't you din? couldn't he din? couldn't we din? couldn't you din? couldn't they din?	couldn't I be dinning? couldn't you be dinning? couldn't he be dinning? couldn't we be dinning? couldn't you be dinning? couldn't they be dinning?
Perfect	V-ing perfect
couldn't I have dinned? couldn't you have dinned? couldn't he have dinned? couldn't we have dinned? couldn't you have dinned? couldn't they have dinned?	couldn't I have been dinning? couldn't you have been dinning? couldn't he have been dinning? couldn't we have been dinning? couldn't you have been dinning? couldn't they have been dinning?