English verb conjugation
COULD INSTATE

Regular verb: instate - instated - instated

Affirmation

Simple form	V-ing form
I could instate you could instate he could instate we could instate you could instate they could instate	I could be instating you could be instating he could be instating we could be instating you could be instating they could be instating
Perfect	V-ing perfect
I could have instated you could have instated he could have instated we could have instated you could have instated they could have instated	I could have been instating you could have been instating he could have been instating we could have been instating you could have been instating they could have been instating

Negation

Simple form	V-ing form
I couldn't instate you couldn't instate he couldn't instate we couldn't instate you couldn't instate they couldn't instate	I couldn't be instating you couldn't be instating he couldn't be instating we couldn't be instating you couldn't be instating they couldn't be instating
Perfect	V-ing perfect
I couldn't have instated you couldn't have instated he couldn't have instated we couldn't have instated you couldn't have instated they couldn't have instated	I couldn't have been instating you couldn't have been instating he couldn't have been instating we couldn't have been instating you couldn't have been instating they couldn't have been instating

Interrogative form

Simple form	V-ing form
could I instate? could you instate? could he instate? could we instate? could you instate? could they instate?	could I be instating? could you be instating? could he be instating? could we be instating? could you be instating? could they be instating?
Perfect	V-ing perfect
could I have instated? could you have instated? could he have instated? could we have instated? could you have instated? could they have instated?	could I have been instating? could you have been instating? could he have been instating? could we have been instating? could you have been instating? could they have been instating?

Interro-negative form

Simple form	V-ing form
couldn't I instate? couldn't you instate? couldn't he instate? couldn't we instate? couldn't you instate? couldn't they instate?	couldn't I be instating? couldn't you be instating? couldn't he be instating? couldn't we be instating? couldn't you be instating? couldn't they be instating?
Perfect	V-ing perfect
couldn't I have instated? couldn't you have instated? couldn't he have instated? couldn't we have instated? couldn't you have instated? couldn't they have instated?	couldn't I have been instating? couldn't you have been instating? couldn't he have been instating? couldn't we have been instating? couldn't you have been instating? couldn't they have been instating?