English verb conjugation
COULD TIDY

Regular verb: tidy - tidied - tidied

Affirmation

Simple form	V-ing form
I could tidy you could tidy she could tidy we could tidy you could tidy they could tidy	I could be tidying you could be tidying she could be tidying we could be tidying you could be tidying they could be tidying
Perfect	V-ing perfect
I could have tidied you could have tidied she could have tidied we could have tidied you could have tidied they could have tidied	I could have been tidying you could have been tidying she could have been tidying we could have been tidying you could have been tidying they could have been tidying

Negation

Simple form	V-ing form
I couldn't tidy you couldn't tidy she couldn't tidy we couldn't tidy you couldn't tidy they couldn't tidy	I couldn't be tidying you couldn't be tidying she couldn't be tidying we couldn't be tidying you couldn't be tidying they couldn't be tidying
Perfect	V-ing perfect
I couldn't have tidied you couldn't have tidied she couldn't have tidied we couldn't have tidied you couldn't have tidied they couldn't have tidied	I couldn't have been tidying you couldn't have been tidying she couldn't have been tidying we couldn't have been tidying you couldn't have been tidying they couldn't have been tidying

Interrogative form

Simple form	V-ing form
could I tidy? could you tidy? could she tidy? could we tidy? could you tidy? could they tidy?	could I be tidying? could you be tidying? could she be tidying? could we be tidying? could you be tidying? could they be tidying?
Perfect	V-ing perfect
could I have tidied? could you have tidied? could she have tidied? could we have tidied? could you have tidied? could they have tidied?	could I have been tidying? could you have been tidying? could she have been tidying? could we have been tidying? could you have been tidying? could they have been tidying?

Interro-negative form

Simple form	V-ing form
couldn't I tidy? couldn't you tidy? couldn't she tidy? couldn't we tidy? couldn't you tidy? couldn't they tidy?	couldn't I be tidying? couldn't you be tidying? couldn't she be tidying? couldn't we be tidying? couldn't you be tidying? couldn't they be tidying?
Perfect	V-ing perfect
couldn't I have tidied? couldn't you have tidied? couldn't she have tidied? couldn't we have tidied? couldn't you have tidied? couldn't they have tidied?	couldn't I have been tidying? couldn't you have been tidying? couldn't she have been tidying? couldn't we have been tidying? couldn't you have been tidying? couldn't they have been tidying?