Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could evoke sth you could evoke sth he could evoke sth we could evoke sth you could evoke sth they could evoke sth
V-ing form
I could be evoke sthing you could be evoke sthing he could be evoke sthing we could be evoke sthing you could be evoke sthing they could be evoke sthing
Perfect
I could have evoke sthed you could have evoke sthed he could have evoke sthed we could have evoke sthed you could have evoke sthed they could have evoke sthed
V-ing perfect
I could have been evoke sthing you could have been evoke sthing he could have been evoke sthing we could have been evoke sthing you could have been evoke sthing they could have been evoke sthing
Negation
Simple form
I couldn't evoke sth you couldn't evoke sth he couldn't evoke sth we couldn't evoke sth you couldn't evoke sth they couldn't evoke sth
V-ing form
I couldn't be evoke sthing you couldn't be evoke sthing he couldn't be evoke sthing we couldn't be evoke sthing you couldn't be evoke sthing they couldn't be evoke sthing
Perfect
I couldn't have evoke sthed you couldn't have evoke sthed he couldn't have evoke sthed we couldn't have evoke sthed you couldn't have evoke sthed they couldn't have evoke sthed
V-ing perfect
I couldn't have been evoke sthing you couldn't have been evoke sthing he couldn't have been evoke sthing we couldn't have been evoke sthing you couldn't have been evoke sthing they couldn't have been evoke sthing
Interrogative form
Simple form
could I evoke sth? could you evoke sth? could he evoke sth? could we evoke sth? could you evoke sth? could they evoke sth?
V-ing form
could I be evoke sthing? could you be evoke sthing? could he be evoke sthing? could we be evoke sthing? could you be evoke sthing? could they be evoke sthing?
Perfect
could I have evoke sthed? could you have evoke sthed? could he have evoke sthed? could we have evoke sthed? could you have evoke sthed? could they have evoke sthed?
V-ing perfect
could I have been evoke sthing? could you have been evoke sthing? could he have been evoke sthing? could we have been evoke sthing? could you have been evoke sthing? could they have been evoke sthing?
Interro-negative form
Simple form
couldn't I evoke sth? couldn't you evoke sth? couldn't he evoke sth? couldn't we evoke sth? couldn't you evoke sth? couldn't they evoke sth?
V-ing form
couldn't I be evoke sthing? couldn't you be evoke sthing? couldn't he be evoke sthing? couldn't we be evoke sthing? couldn't you be evoke sthing? couldn't they be evoke sthing?
Perfect
couldn't I have evoke sthed? couldn't you have evoke sthed? couldn't he have evoke sthed? couldn't we have evoke sthed? couldn't you have evoke sthed? couldn't they have evoke sthed?
V-ing perfect
couldn't I have been evoke sthing? couldn't you have been evoke sthing? couldn't he have been evoke sthing? couldn't we have been evoke sthing? couldn't you have been evoke sthing? couldn't they have been evoke sthing?