English verb conjugation
COULD WHITEWASH

Regular verb: whitewash - whitewashed - whitewashed

Affirmation

Simple form	V-ing form
I could whitewash you could whitewash she could whitewash we could whitewash you could whitewash they could whitewash	I could be whitewashing you could be whitewashing she could be whitewashing we could be whitewashing you could be whitewashing they could be whitewashing
Perfect	V-ing perfect
I could have whitewashed you could have whitewashed she could have whitewashed we could have whitewashed you could have whitewashed they could have whitewashed	I could have been whitewashing you could have been whitewashing she could have been whitewashing we could have been whitewashing you could have been whitewashing they could have been whitewashing

Negation

Simple form	V-ing form
I couldn't whitewash you couldn't whitewash she couldn't whitewash we couldn't whitewash you couldn't whitewash they couldn't whitewash	I couldn't be whitewashing you couldn't be whitewashing she couldn't be whitewashing we couldn't be whitewashing you couldn't be whitewashing they couldn't be whitewashing
Perfect	V-ing perfect
I couldn't have whitewashed you couldn't have whitewashed she couldn't have whitewashed we couldn't have whitewashed you couldn't have whitewashed they couldn't have whitewashed	I couldn't have been whitewashing you couldn't have been whitewashing she couldn't have been whitewashing we couldn't have been whitewashing you couldn't have been whitewashing they couldn't have been whitewashing

Interrogative form

Simple form	V-ing form
could I whitewash? could you whitewash? could she whitewash? could we whitewash? could you whitewash? could they whitewash?	could I be whitewashing? could you be whitewashing? could she be whitewashing? could we be whitewashing? could you be whitewashing? could they be whitewashing?
Perfect	V-ing perfect
could I have whitewashed? could you have whitewashed? could she have whitewashed? could we have whitewashed? could you have whitewashed? could they have whitewashed?	could I have been whitewashing? could you have been whitewashing? could she have been whitewashing? could we have been whitewashing? could you have been whitewashing? could they have been whitewashing?

Interro-negative form

Simple form	V-ing form
couldn't I whitewash? couldn't you whitewash? couldn't she whitewash? couldn't we whitewash? couldn't you whitewash? couldn't they whitewash?	couldn't I be whitewashing? couldn't you be whitewashing? couldn't she be whitewashing? couldn't we be whitewashing? couldn't you be whitewashing? couldn't they be whitewashing?
Perfect	V-ing perfect
couldn't I have whitewashed? couldn't you have whitewashed? couldn't she have whitewashed? couldn't we have whitewashed? couldn't you have whitewashed? couldn't they have whitewashed?	couldn't I have been whitewashing? couldn't you have been whitewashing? couldn't she have been whitewashing? couldn't we have been whitewashing? couldn't you have been whitewashing? couldn't they have been whitewashing?