English verb conjugation
COULD SECURE

Regular verb: secure - secured - secured

Affirmation

Simple form	V-ing form
I could secure you could secure she could secure we could secure you could secure they could secure	I could be securing you could be securing she could be securing we could be securing you could be securing they could be securing
Perfect	V-ing perfect
I could have secured you could have secured she could have secured we could have secured you could have secured they could have secured	I could have been securing you could have been securing she could have been securing we could have been securing you could have been securing they could have been securing

Negation

Simple form	V-ing form
I couldn't secure you couldn't secure she couldn't secure we couldn't secure you couldn't secure they couldn't secure	I couldn't be securing you couldn't be securing she couldn't be securing we couldn't be securing you couldn't be securing they couldn't be securing
Perfect	V-ing perfect
I couldn't have secured you couldn't have secured she couldn't have secured we couldn't have secured you couldn't have secured they couldn't have secured	I couldn't have been securing you couldn't have been securing she couldn't have been securing we couldn't have been securing you couldn't have been securing they couldn't have been securing

Interrogative form

Simple form	V-ing form
could I secure? could you secure? could she secure? could we secure? could you secure? could they secure?	could I be securing? could you be securing? could she be securing? could we be securing? could you be securing? could they be securing?
Perfect	V-ing perfect
could I have secured? could you have secured? could she have secured? could we have secured? could you have secured? could they have secured?	could I have been securing? could you have been securing? could she have been securing? could we have been securing? could you have been securing? could they have been securing?

Interro-negative form

Simple form	V-ing form
couldn't I secure? couldn't you secure? couldn't she secure? couldn't we secure? couldn't you secure? couldn't they secure?	couldn't I be securing? couldn't you be securing? couldn't she be securing? couldn't we be securing? couldn't you be securing? couldn't they be securing?
Perfect	V-ing perfect
couldn't I have secured? couldn't you have secured? couldn't she have secured? couldn't we have secured? couldn't you have secured? couldn't they have secured?	couldn't I have been securing? couldn't you have been securing? couldn't she have been securing? couldn't we have been securing? couldn't you have been securing? couldn't they have been securing?