English verb conjugation
COULD TINCTURE

Regular verb: tincture - tinctured - tinctured

Affirmation

Simple form	V-ing form
I could tincture you could tincture she could tincture we could tincture you could tincture they could tincture	I could be tincturing you could be tincturing she could be tincturing we could be tincturing you could be tincturing they could be tincturing
Perfect	V-ing perfect
I could have tinctured you could have tinctured she could have tinctured we could have tinctured you could have tinctured they could have tinctured	I could have been tincturing you could have been tincturing she could have been tincturing we could have been tincturing you could have been tincturing they could have been tincturing

Negation

Simple form	V-ing form
I couldn't tincture you couldn't tincture she couldn't tincture we couldn't tincture you couldn't tincture they couldn't tincture	I couldn't be tincturing you couldn't be tincturing she couldn't be tincturing we couldn't be tincturing you couldn't be tincturing they couldn't be tincturing
Perfect	V-ing perfect
I couldn't have tinctured you couldn't have tinctured she couldn't have tinctured we couldn't have tinctured you couldn't have tinctured they couldn't have tinctured	I couldn't have been tincturing you couldn't have been tincturing she couldn't have been tincturing we couldn't have been tincturing you couldn't have been tincturing they couldn't have been tincturing

Interrogative form

Simple form	V-ing form
could I tincture? could you tincture? could she tincture? could we tincture? could you tincture? could they tincture?	could I be tincturing? could you be tincturing? could she be tincturing? could we be tincturing? could you be tincturing? could they be tincturing?
Perfect	V-ing perfect
could I have tinctured? could you have tinctured? could she have tinctured? could we have tinctured? could you have tinctured? could they have tinctured?	could I have been tincturing? could you have been tincturing? could she have been tincturing? could we have been tincturing? could you have been tincturing? could they have been tincturing?

Interro-negative form

Simple form	V-ing form
couldn't I tincture? couldn't you tincture? couldn't she tincture? couldn't we tincture? couldn't you tincture? couldn't they tincture?	couldn't I be tincturing? couldn't you be tincturing? couldn't she be tincturing? couldn't we be tincturing? couldn't you be tincturing? couldn't they be tincturing?
Perfect	V-ing perfect
couldn't I have tinctured? couldn't you have tinctured? couldn't she have tinctured? couldn't we have tinctured? couldn't you have tinctured? couldn't they have tinctured?	couldn't I have been tincturing? couldn't you have been tincturing? couldn't she have been tincturing? couldn't we have been tincturing? couldn't you have been tincturing? couldn't they have been tincturing?