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 couldn't seise you couldn't seise she couldn't seise we couldn't seise you couldn't seise they couldn't seise	I couldn't be seising you couldn't be seising she couldn't be seising we couldn't be seising you couldn't be seising they couldn't be seising
Perfect	V-ing perfect
I couldn't have seised you couldn't have seised she couldn't have seised we couldn't have seised you couldn't have seised they couldn't have seised	I couldn't have been seising you couldn't have been seising she couldn't have been seising we couldn't have been seising you couldn't have been seising they couldn't 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
couldn't I seise? couldn't you seise? couldn't she seise? couldn't we seise? couldn't you seise? couldn't they seise?	couldn't I be seising? couldn't you be seising? couldn't she be seising? couldn't we be seising? couldn't you be seising? couldn't they be seising?
Perfect	V-ing perfect
couldn't I have seised? couldn't you have seised? couldn't she have seised? couldn't we have seised? couldn't you have seised? couldn't they have seised?	couldn't I have been seising? couldn't you have been seising? couldn't she have been seising? couldn't we have been seising? couldn't you have been seising? couldn't they have been seising?