English verb conjugation
COULD PREINSERT

Regular verb: preinsert - preinserted - preinserted

Affirmation

Simple form	V-ing form
I could preinsert you could preinsert she could preinsert we could preinsert you could preinsert they could preinsert	I could be preinserting you could be preinserting she could be preinserting we could be preinserting you could be preinserting they could be preinserting
Perfect	V-ing perfect
I could have preinserted you could have preinserted she could have preinserted we could have preinserted you could have preinserted they could have preinserted	I could have been preinserting you could have been preinserting she could have been preinserting we could have been preinserting you could have been preinserting they could have been preinserting

Negation

Simple form	V-ing form
I could not preinsert you could not preinsert she could not preinsert we could not preinsert you could not preinsert they could not preinsert	I could not be preinserting you could not be preinserting she could not be preinserting we could not be preinserting you could not be preinserting they could not be preinserting
Perfect	V-ing perfect
I could not have preinserted you could not have preinserted she could not have preinserted we could not have preinserted you could not have preinserted they could not have preinserted	I could not have been preinserting you could not have been preinserting she could not have been preinserting we could not have been preinserting you could not have been preinserting they could not have been preinserting

Interrogative form

Simple form	V-ing form
could I preinsert? could you preinsert? could she preinsert? could we preinsert? could you preinsert? could they preinsert?	could I be preinserting? could you be preinserting? could she be preinserting? could we be preinserting? could you be preinserting? could they be preinserting?
Perfect	V-ing perfect
could I have preinserted? could you have preinserted? could she have preinserted? could we have preinserted? could you have preinserted? could they have preinserted?	could I have been preinserting? could you have been preinserting? could she have been preinserting? could we have been preinserting? could you have been preinserting? could they have been preinserting?

Interro-negative form

Simple form	V-ing form
could I not preinsert? could you not preinsert? could she not preinsert? could we not preinsert? could you not preinsert? could they not preinsert?	could I not be preinserting? could you not be preinserting? could she not be preinserting? could we not be preinserting? could you not be preinserting? could they not be preinserting?
Perfect	V-ing perfect
could I not have preinserted? could you not have preinserted? could she not have preinserted? could we not have preinserted? could you not have preinserted? could they not have preinserted?	could I not have been preinserting? could you not have been preinserting? could she not have been preinserting? could we not have been preinserting? could you not have been preinserting? could they not have been preinserting?