English verb conjugation
COULD EXPIATE

Regular verb: expiate - expiated - expiated

Affirmation

Simple form	V-ing form
I could expiate you could expiate she could expiate we could expiate you could expiate they could expiate	I could be expiating you could be expiating she could be expiating we could be expiating you could be expiating they could be expiating
Perfect	V-ing perfect
I could have expiated you could have expiated she could have expiated we could have expiated you could have expiated they could have expiated	I could have been expiating you could have been expiating she could have been expiating we could have been expiating you could have been expiating they could have been expiating

Negation

Simple form	V-ing form
I couldn't expiate you couldn't expiate she couldn't expiate we couldn't expiate you couldn't expiate they couldn't expiate	I couldn't be expiating you couldn't be expiating she couldn't be expiating we couldn't be expiating you couldn't be expiating they couldn't be expiating
Perfect	V-ing perfect
I couldn't have expiated you couldn't have expiated she couldn't have expiated we couldn't have expiated you couldn't have expiated they couldn't have expiated	I couldn't have been expiating you couldn't have been expiating she couldn't have been expiating we couldn't have been expiating you couldn't have been expiating they couldn't have been expiating

Interrogative form

Simple form	V-ing form
could I expiate? could you expiate? could she expiate? could we expiate? could you expiate? could they expiate?	could I be expiating? could you be expiating? could she be expiating? could we be expiating? could you be expiating? could they be expiating?
Perfect	V-ing perfect
could I have expiated? could you have expiated? could she have expiated? could we have expiated? could you have expiated? could they have expiated?	could I have been expiating? could you have been expiating? could she have been expiating? could we have been expiating? could you have been expiating? could they have been expiating?

Interro-negative form

Simple form	V-ing form
couldn't I expiate? couldn't you expiate? couldn't she expiate? couldn't we expiate? couldn't you expiate? couldn't they expiate?	couldn't I be expiating? couldn't you be expiating? couldn't she be expiating? couldn't we be expiating? couldn't you be expiating? couldn't they be expiating?
Perfect	V-ing perfect
couldn't I have expiated? couldn't you have expiated? couldn't she have expiated? couldn't we have expiated? couldn't you have expiated? couldn't they have expiated?	couldn't I have been expiating? couldn't you have been expiating? couldn't she have been expiating? couldn't we have been expiating? couldn't you have been expiating? couldn't they have been expiating?