English verb conjugation
COULD EXPIATE

Regular verb: expiate - expiated - expiated

Affirmation

Simple form	V-ing form
I could expiate you could expiate he could expiate we could expiate you could expiate they could expiate	I could be expiating you could be expiating he 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 he 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 he 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 he 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 he 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 he 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 he 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 he expiate? could we expiate? could you expiate? could they expiate?	could I be expiating? could you be expiating? could he 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 he 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 he 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 he 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 he 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 he 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 he have been expiating? couldn't we have been expiating? couldn't you have been expiating? couldn't they have been expiating?