English verb conjugation
COULD SINICISE

Regular verb: sinicise - sinicised - sinicised

Affirmation

Simple form	V-ing form
I could sinicise you could sinicise he could sinicise we could sinicise you could sinicise they could sinicise	I could be sinicising you could be sinicising he could be sinicising we could be sinicising you could be sinicising they could be sinicising
Perfect	V-ing perfect
I could have sinicised you could have sinicised he could have sinicised we could have sinicised you could have sinicised they could have sinicised	I could have been sinicising you could have been sinicising he could have been sinicising we could have been sinicising you could have been sinicising they could have been sinicising

Negation

Simple form	V-ing form
I couldn't sinicise you couldn't sinicise he couldn't sinicise we couldn't sinicise you couldn't sinicise they couldn't sinicise	I couldn't be sinicising you couldn't be sinicising he couldn't be sinicising we couldn't be sinicising you couldn't be sinicising they couldn't be sinicising
Perfect	V-ing perfect
I couldn't have sinicised you couldn't have sinicised he couldn't have sinicised we couldn't have sinicised you couldn't have sinicised they couldn't have sinicised	I couldn't have been sinicising you couldn't have been sinicising he couldn't have been sinicising we couldn't have been sinicising you couldn't have been sinicising they couldn't have been sinicising

Interrogative form

Simple form	V-ing form
could I sinicise? could you sinicise? could he sinicise? could we sinicise? could you sinicise? could they sinicise?	could I be sinicising? could you be sinicising? could he be sinicising? could we be sinicising? could you be sinicising? could they be sinicising?
Perfect	V-ing perfect
could I have sinicised? could you have sinicised? could he have sinicised? could we have sinicised? could you have sinicised? could they have sinicised?	could I have been sinicising? could you have been sinicising? could he have been sinicising? could we have been sinicising? could you have been sinicising? could they have been sinicising?

Interro-negative form

Simple form	V-ing form
couldn't I sinicise? couldn't you sinicise? couldn't he sinicise? couldn't we sinicise? couldn't you sinicise? couldn't they sinicise?	couldn't I be sinicising? couldn't you be sinicising? couldn't he be sinicising? couldn't we be sinicising? couldn't you be sinicising? couldn't they be sinicising?
Perfect	V-ing perfect
couldn't I have sinicised? couldn't you have sinicised? couldn't he have sinicised? couldn't we have sinicised? couldn't you have sinicised? couldn't they have sinicised?	couldn't I have been sinicising? couldn't you have been sinicising? couldn't he have been sinicising? couldn't we have been sinicising? couldn't you have been sinicising? couldn't they have been sinicising?