English verb conjugation
COULD CONSTERNATE

Regular verb: consternate - consternated - consternated

Affirmation

Simple form	V-ing form
I could consternate you could consternate he could consternate we could consternate you could consternate they could consternate	I could be consternating you could be consternating he could be consternating we could be consternating you could be consternating they could be consternating
Perfect	V-ing perfect
I could have consternated you could have consternated he could have consternated we could have consternated you could have consternated they could have consternated	I could have been consternating you could have been consternating he could have been consternating we could have been consternating you could have been consternating they could have been consternating

Negation

Simple form	V-ing form
I couldn't consternate you couldn't consternate he couldn't consternate we couldn't consternate you couldn't consternate they couldn't consternate	I couldn't be consternating you couldn't be consternating he couldn't be consternating we couldn't be consternating you couldn't be consternating they couldn't be consternating
Perfect	V-ing perfect
I couldn't have consternated you couldn't have consternated he couldn't have consternated we couldn't have consternated you couldn't have consternated they couldn't have consternated	I couldn't have been consternating you couldn't have been consternating he couldn't have been consternating we couldn't have been consternating you couldn't have been consternating they couldn't have been consternating

Interrogative form

Simple form	V-ing form
could I consternate? could you consternate? could he consternate? could we consternate? could you consternate? could they consternate?	could I be consternating? could you be consternating? could he be consternating? could we be consternating? could you be consternating? could they be consternating?
Perfect	V-ing perfect
could I have consternated? could you have consternated? could he have consternated? could we have consternated? could you have consternated? could they have consternated?	could I have been consternating? could you have been consternating? could he have been consternating? could we have been consternating? could you have been consternating? could they have been consternating?

Interro-negative form

Simple form	V-ing form
couldn't I consternate? couldn't you consternate? couldn't he consternate? couldn't we consternate? couldn't you consternate? couldn't they consternate?	couldn't I be consternating? couldn't you be consternating? couldn't he be consternating? couldn't we be consternating? couldn't you be consternating? couldn't they be consternating?
Perfect	V-ing perfect
couldn't I have consternated? couldn't you have consternated? couldn't he have consternated? couldn't we have consternated? couldn't you have consternated? couldn't they have consternated?	couldn't I have been consternating? couldn't you have been consternating? couldn't he have been consternating? couldn't we have been consternating? couldn't you have been consternating? couldn't they have been consternating?