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