English verb conjugation
COULD PROLOGUE

Regular verb: prologue - prologued - prologued

Affirmation

Simple form	V-ing form
I could prologue you could prologue she could prologue we could prologue you could prologue they could prologue	I could be prologuing you could be prologuing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she prologue? could we prologue? could you prologue? could they prologue?	could I be prologuing? could you be prologuing? could she 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 she 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 she 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 she 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 she 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 she 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 she have been prologuing? couldn't we have been prologuing? couldn't you have been prologuing? couldn't they have been prologuing?