English verb conjugation
COULD SERIALISE

Regular verb: serialise - serialised - serialised

Affirmation

Simple form	V-ing form
I could serialise you could serialise he could serialise we could serialise you could serialise they could serialise	I could be serialising you could be serialising he could be serialising we could be serialising you could be serialising they could be serialising
Perfect	V-ing perfect
I could have serialised you could have serialised he could have serialised we could have serialised you could have serialised they could have serialised	I could have been serialising you could have been serialising he could have been serialising we could have been serialising you could have been serialising they could have been serialising

Negation

Simple form	V-ing form
I couldn't serialise you couldn't serialise he couldn't serialise we couldn't serialise you couldn't serialise they couldn't serialise	I couldn't be serialising you couldn't be serialising he couldn't be serialising we couldn't be serialising you couldn't be serialising they couldn't be serialising
Perfect	V-ing perfect
I couldn't have serialised you couldn't have serialised he couldn't have serialised we couldn't have serialised you couldn't have serialised they couldn't have serialised	I couldn't have been serialising you couldn't have been serialising he couldn't have been serialising we couldn't have been serialising you couldn't have been serialising they couldn't have been serialising

Interrogative form

Simple form	V-ing form
could I serialise? could you serialise? could he serialise? could we serialise? could you serialise? could they serialise?	could I be serialising? could you be serialising? could he be serialising? could we be serialising? could you be serialising? could they be serialising?
Perfect	V-ing perfect
could I have serialised? could you have serialised? could he have serialised? could we have serialised? could you have serialised? could they have serialised?	could I have been serialising? could you have been serialising? could he have been serialising? could we have been serialising? could you have been serialising? could they have been serialising?

Interro-negative form

Simple form	V-ing form
couldn't I serialise? couldn't you serialise? couldn't he serialise? couldn't we serialise? couldn't you serialise? couldn't they serialise?	couldn't I be serialising? couldn't you be serialising? couldn't he be serialising? couldn't we be serialising? couldn't you be serialising? couldn't they be serialising?
Perfect	V-ing perfect
couldn't I have serialised? couldn't you have serialised? couldn't he have serialised? couldn't we have serialised? couldn't you have serialised? couldn't they have serialised?	couldn't I have been serialising? couldn't you have been serialising? couldn't he have been serialising? couldn't we have been serialising? couldn't you have been serialising? couldn't they have been serialising?