English verb conjugation
COULD EARTH

Regular verb: earth - earthed - earthed

Affirmation

Simple form	V-ing form
I could earth you could earth he could earth we could earth you could earth they could earth	I could be earthing you could be earthing he could be earthing we could be earthing you could be earthing they could be earthing
Perfect	V-ing perfect
I could have earthed you could have earthed he could have earthed we could have earthed you could have earthed they could have earthed	I could have been earthing you could have been earthing he could have been earthing we could have been earthing you could have been earthing they could have been earthing

Negation

Simple form	V-ing form
I couldn't earth you couldn't earth he couldn't earth we couldn't earth you couldn't earth they couldn't earth	I couldn't be earthing you couldn't be earthing he couldn't be earthing we couldn't be earthing you couldn't be earthing they couldn't be earthing
Perfect	V-ing perfect
I couldn't have earthed you couldn't have earthed he couldn't have earthed we couldn't have earthed you couldn't have earthed they couldn't have earthed	I couldn't have been earthing you couldn't have been earthing he couldn't have been earthing we couldn't have been earthing you couldn't have been earthing they couldn't have been earthing

Interrogative form

Simple form	V-ing form
could I earth? could you earth? could he earth? could we earth? could you earth? could they earth?	could I be earthing? could you be earthing? could he be earthing? could we be earthing? could you be earthing? could they be earthing?
Perfect	V-ing perfect
could I have earthed? could you have earthed? could he have earthed? could we have earthed? could you have earthed? could they have earthed?	could I have been earthing? could you have been earthing? could he have been earthing? could we have been earthing? could you have been earthing? could they have been earthing?

Interro-negative form

Simple form	V-ing form
couldn't I earth? couldn't you earth? couldn't he earth? couldn't we earth? couldn't you earth? couldn't they earth?	couldn't I be earthing? couldn't you be earthing? couldn't he be earthing? couldn't we be earthing? couldn't you be earthing? couldn't they be earthing?
Perfect	V-ing perfect
couldn't I have earthed? couldn't you have earthed? couldn't he have earthed? couldn't we have earthed? couldn't you have earthed? couldn't they have earthed?	couldn't I have been earthing? couldn't you have been earthing? couldn't he have been earthing? couldn't we have been earthing? couldn't you have been earthing? couldn't they have been earthing?