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