English verb conjugation
COULD SEISE

Regular verb: seise - seised - seised

Affirmation

Simple form	V-ing form
I could seise you could seise she could seise we could seise you could seise they could seise	I could be seising you could be seising she could be seising we could be seising you could be seising they could be seising
Perfect	V-ing perfect
I could have seised you could have seised she could have seised we could have seised you could have seised they could have seised	I could have been seising you could have been seising she could have been seising we could have been seising you could have been seising they could have been seising

Negation

Simple form	V-ing form
I could not seise you could not seise she could not seise we could not seise you could not seise they could not seise	I could not be seising you could not be seising she could not be seising we could not be seising you could not be seising they could not be seising
Perfect	V-ing perfect
I could not have seised you could not have seised she could not have seised we could not have seised you could not have seised they could not have seised	I could not have been seising you could not have been seising she could not have been seising we could not have been seising you could not have been seising they could not have been seising

Interrogative form

Simple form	V-ing form
could I seise? could you seise? could she seise? could we seise? could you seise? could they seise?	could I be seising? could you be seising? could she be seising? could we be seising? could you be seising? could they be seising?
Perfect	V-ing perfect
could I have seised? could you have seised? could she have seised? could we have seised? could you have seised? could they have seised?	could I have been seising? could you have been seising? could she have been seising? could we have been seising? could you have been seising? could they have been seising?

Interro-negative form

Simple form	V-ing form
could I not seise? could you not seise? could she not seise? could we not seise? could you not seise? could they not seise?	could I not be seising? could you not be seising? could she not be seising? could we not be seising? could you not be seising? could they not be seising?
Perfect	V-ing perfect
could I not have seised? could you not have seised? could she not have seised? could we not have seised? could you not have seised? could they not have seised?	could I not have been seising? could you not have been seising? could she not have been seising? could we not have been seising? could you not have been seising? could they not have been seising?