English verb conjugation
COULD PROLOGUE

Regular verb: prologue - prologued - prologued

Affirmation

Simple form	V-ing form
I could prologue you could prologue he could prologue we could prologue you could prologue they could prologue	I could be prologuing you could be prologuing he could be prologuing we could be prologuing you could be prologuing they could be prologuing
Perfect	V-ing perfect
I could have prologued you could have prologued he could have prologued we could have prologued you could have prologued they could have prologued	I could have been prologuing you could have been prologuing he could have been prologuing we could have been prologuing you could have been prologuing they could have been prologuing

Negation

Simple form	V-ing form
I couldn't prologue you couldn't prologue he couldn't prologue we couldn't prologue you couldn't prologue they couldn't prologue	I couldn't be prologuing you couldn't be prologuing he couldn't be prologuing we couldn't be prologuing you couldn't be prologuing they couldn't be prologuing
Perfect	V-ing perfect
I couldn't have prologued you couldn't have prologued he couldn't have prologued we couldn't have prologued you couldn't have prologued they couldn't have prologued	I couldn't have been prologuing you couldn't have been prologuing he couldn't have been prologuing we couldn't have been prologuing you couldn't have been prologuing they couldn't have been prologuing

Interrogative form

Simple form	V-ing form
could I prologue? could you prologue? could he prologue? could we prologue? could you prologue? could they prologue?	could I be prologuing? could you be prologuing? could he be prologuing? could we be prologuing? could you be prologuing? could they be prologuing?
Perfect	V-ing perfect
could I have prologued? could you have prologued? could he have prologued? could we have prologued? could you have prologued? could they have prologued?	could I have been prologuing? could you have been prologuing? could he have been prologuing? could we have been prologuing? could you have been prologuing? could they have been prologuing?

Interro-negative form

Simple form	V-ing form
couldn't I prologue? couldn't you prologue? couldn't he prologue? couldn't we prologue? couldn't you prologue? couldn't they prologue?	couldn't I be prologuing? couldn't you be prologuing? couldn't he be prologuing? couldn't we be prologuing? couldn't you be prologuing? couldn't they be prologuing?
Perfect	V-ing perfect
couldn't I have prologued? couldn't you have prologued? couldn't he have prologued? couldn't we have prologued? couldn't you have prologued? couldn't they have prologued?	couldn't I have been prologuing? couldn't you have been prologuing? couldn't he have been prologuing? couldn't we have been prologuing? couldn't you have been prologuing? couldn't they have been prologuing?