English verb conjugation
COULD SKIVVY

Regular verb: skivvy - skivvied - skivvied

Affirmation

Simple form	V-ing form
I could skivvy you could skivvy he could skivvy we could skivvy you could skivvy they could skivvy	I could be skivvying you could be skivvying he could be skivvying we could be skivvying you could be skivvying they could be skivvying
Perfect	V-ing perfect
I could have skivvied you could have skivvied he could have skivvied we could have skivvied you could have skivvied they could have skivvied	I could have been skivvying you could have been skivvying he could have been skivvying we could have been skivvying you could have been skivvying they could have been skivvying

Negation

Simple form	V-ing form
I could not skivvy you could not skivvy he could not skivvy we could not skivvy you could not skivvy they could not skivvy	I could not be skivvying you could not be skivvying he could not be skivvying we could not be skivvying you could not be skivvying they could not be skivvying
Perfect	V-ing perfect
I could not have skivvied you could not have skivvied he could not have skivvied we could not have skivvied you could not have skivvied they could not have skivvied	I could not have been skivvying you could not have been skivvying he could not have been skivvying we could not have been skivvying you could not have been skivvying they could not have been skivvying

Interrogative form

Simple form	V-ing form
could I skivvy? could you skivvy? could he skivvy? could we skivvy? could you skivvy? could they skivvy?	could I be skivvying? could you be skivvying? could he be skivvying? could we be skivvying? could you be skivvying? could they be skivvying?
Perfect	V-ing perfect
could I have skivvied? could you have skivvied? could he have skivvied? could we have skivvied? could you have skivvied? could they have skivvied?	could I have been skivvying? could you have been skivvying? could he have been skivvying? could we have been skivvying? could you have been skivvying? could they have been skivvying?

Interro-negative form

Simple form	V-ing form
could I not skivvy? could you not skivvy? could he not skivvy? could we not skivvy? could you not skivvy? could they not skivvy?	could I not be skivvying? could you not be skivvying? could he not be skivvying? could we not be skivvying? could you not be skivvying? could they not be skivvying?
Perfect	V-ing perfect
could I not have skivvied? could you not have skivvied? could he not have skivvied? could we not have skivvied? could you not have skivvied? could they not have skivvied?	could I not have been skivvying? could you not have been skivvying? could he not have been skivvying? could we not have been skivvying? could you not have been skivvying? could they not have been skivvying?