English verb conjugation
COULD SKELETONISE

Regular verb: skeletonise - skeletonised - skeletonised

Affirmation

Simple form	V-ing form
I could skeletonise you could skeletonise he could skeletonise we could skeletonise you could skeletonise they could skeletonise	I could be skeletonising you could be skeletonising he could be skeletonising we could be skeletonising you could be skeletonising they could be skeletonising
Perfect	V-ing perfect
I could have skeletonised you could have skeletonised he could have skeletonised we could have skeletonised you could have skeletonised they could have skeletonised	I could have been skeletonising you could have been skeletonising he could have been skeletonising we could have been skeletonising you could have been skeletonising they could have been skeletonising

Negation

Simple form	V-ing form
I couldn't skeletonise you couldn't skeletonise he couldn't skeletonise we couldn't skeletonise you couldn't skeletonise they couldn't skeletonise	I couldn't be skeletonising you couldn't be skeletonising he couldn't be skeletonising we couldn't be skeletonising you couldn't be skeletonising they couldn't be skeletonising
Perfect	V-ing perfect
I couldn't have skeletonised you couldn't have skeletonised he couldn't have skeletonised we couldn't have skeletonised you couldn't have skeletonised they couldn't have skeletonised	I couldn't have been skeletonising you couldn't have been skeletonising he couldn't have been skeletonising we couldn't have been skeletonising you couldn't have been skeletonising they couldn't have been skeletonising

Interrogative form

Simple form	V-ing form
could I skeletonise? could you skeletonise? could he skeletonise? could we skeletonise? could you skeletonise? could they skeletonise?	could I be skeletonising? could you be skeletonising? could he be skeletonising? could we be skeletonising? could you be skeletonising? could they be skeletonising?
Perfect	V-ing perfect
could I have skeletonised? could you have skeletonised? could he have skeletonised? could we have skeletonised? could you have skeletonised? could they have skeletonised?	could I have been skeletonising? could you have been skeletonising? could he have been skeletonising? could we have been skeletonising? could you have been skeletonising? could they have been skeletonising?

Interro-negative form

Simple form	V-ing form
couldn't I skeletonise? couldn't you skeletonise? couldn't he skeletonise? couldn't we skeletonise? couldn't you skeletonise? couldn't they skeletonise?	couldn't I be skeletonising? couldn't you be skeletonising? couldn't he be skeletonising? couldn't we be skeletonising? couldn't you be skeletonising? couldn't they be skeletonising?
Perfect	V-ing perfect
couldn't I have skeletonised? couldn't you have skeletonised? couldn't he have skeletonised? couldn't we have skeletonised? couldn't you have skeletonised? couldn't they have skeletonised?	couldn't I have been skeletonising? couldn't you have been skeletonising? couldn't he have been skeletonising? couldn't we have been skeletonising? couldn't you have been skeletonising? couldn't they have been skeletonising?