Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could bed bed you could bed bed he could bed bed we could bed bed you could bed bed they could bed bed
V-ing form
I could be bed beding you could be bed beding he could be bed beding we could be bed beding you could be bed beding they could be bed beding
Perfect
I could have bed beded you could have bed beded he could have bed beded we could have bed beded you could have bed beded they could have bed beded
V-ing perfect
I could have been bed beding you could have been bed beding he could have been bed beding we could have been bed beding you could have been bed beding they could have been bed beding
Negation
Simple form
I could not bed bed you could not bed bed he could not bed bed we could not bed bed you could not bed bed they could not bed bed
V-ing form
I could not be bed beding you could not be bed beding he could not be bed beding we could not be bed beding you could not be bed beding they could not be bed beding
Perfect
I could not have bed beded you could not have bed beded he could not have bed beded we could not have bed beded you could not have bed beded they could not have bed beded
V-ing perfect
I could not have been bed beding you could not have been bed beding he could not have been bed beding we could not have been bed beding you could not have been bed beding they could not have been bed beding
Interrogative form
Simple form
could I bed bed? could you bed bed? could he bed bed? could we bed bed? could you bed bed? could they bed bed?
V-ing form
could I be bed beding? could you be bed beding? could he be bed beding? could we be bed beding? could you be bed beding? could they be bed beding?
Perfect
could I have bed beded? could you have bed beded? could he have bed beded? could we have bed beded? could you have bed beded? could they have bed beded?
V-ing perfect
could I have been bed beding? could you have been bed beding? could he have been bed beding? could we have been bed beding? could you have been bed beding? could they have been bed beding?
Interro-negative form
Simple form
could I not bed bed? could you not bed bed? could he not bed bed? could we not bed bed? could you not bed bed? could they not bed bed?
V-ing form
could I not be bed beding? could you not be bed beding? could he not be bed beding? could we not be bed beding? could you not be bed beding? could they not be bed beding?
Perfect
could I not have bed beded? could you not have bed beded? could he not have bed beded? could we not have bed beded? could you not have bed beded? could they not have bed beded?
V-ing perfect
could I not have been bed beding? could you not have been bed beding? could he not have been bed beding? could we not have been bed beding? could you not have been bed beding? could they not have been bed beding?