I could elutriate you could elutriate he could elutriate we could elutriate you could elutriate they could elutriate
V-ing form
I could be elutriating you could be elutriating he could be elutriating we could be elutriating you could be elutriating they could be elutriating
Perfect
I could have elutriated you could have elutriated he could have elutriated we could have elutriated you could have elutriated they could have elutriated
V-ing perfect
I could have been elutriating you could have been elutriating he could have been elutriating we could have been elutriating you could have been elutriating they could have been elutriating
Negation
Simple form
I couldn't elutriate you couldn't elutriate he couldn't elutriate we couldn't elutriate you couldn't elutriate they couldn't elutriate
V-ing form
I couldn't be elutriating you couldn't be elutriating he couldn't be elutriating we couldn't be elutriating you couldn't be elutriating they couldn't be elutriating
Perfect
I couldn't have elutriated you couldn't have elutriated he couldn't have elutriated we couldn't have elutriated you couldn't have elutriated they couldn't have elutriated
V-ing perfect
I couldn't have been elutriating you couldn't have been elutriating he couldn't have been elutriating we couldn't have been elutriating you couldn't have been elutriating they couldn't have been elutriating
Interrogative form
Simple form
could I elutriate? could you elutriate? could he elutriate? could we elutriate? could you elutriate? could they elutriate?
V-ing form
could I be elutriating? could you be elutriating? could he be elutriating? could we be elutriating? could you be elutriating? could they be elutriating?
Perfect
could I have elutriated? could you have elutriated? could he have elutriated? could we have elutriated? could you have elutriated? could they have elutriated?
V-ing perfect
could I have been elutriating? could you have been elutriating? could he have been elutriating? could we have been elutriating? could you have been elutriating? could they have been elutriating?
Interro-negative form
Simple form
couldn't I elutriate? couldn't you elutriate? couldn't he elutriate? couldn't we elutriate? couldn't you elutriate? couldn't they elutriate?
V-ing form
couldn't I be elutriating? couldn't you be elutriating? couldn't he be elutriating? couldn't we be elutriating? couldn't you be elutriating? couldn't they be elutriating?
Perfect
couldn't I have elutriated? couldn't you have elutriated? couldn't he have elutriated? couldn't we have elutriated? couldn't you have elutriated? couldn't they have elutriated?
V-ing perfect
couldn't I have been elutriating? couldn't you have been elutriating? couldn't he have been elutriating? couldn't we have been elutriating? couldn't you have been elutriating? couldn't they have been elutriating?