Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could pale. fade you could pale. fade she could pale. fade we could pale. fade you could pale. fade they could pale. fade
V-ing form
I could be pale. fading you could be pale. fading she could be pale. fading we could be pale. fading you could be pale. fading they could be pale. fading
Perfect
I could have pale. faded you could have pale. faded she could have pale. faded we could have pale. faded you could have pale. faded they could have pale. faded
V-ing perfect
I could have been pale. fading you could have been pale. fading she could have been pale. fading we could have been pale. fading you could have been pale. fading they could have been pale. fading
Negation
Simple form
I could not pale. fade you could not pale. fade she could not pale. fade we could not pale. fade you could not pale. fade they could not pale. fade
V-ing form
I could not be pale. fading you could not be pale. fading she could not be pale. fading we could not be pale. fading you could not be pale. fading they could not be pale. fading
Perfect
I could not have pale. faded you could not have pale. faded she could not have pale. faded we could not have pale. faded you could not have pale. faded they could not have pale. faded
V-ing perfect
I could not have been pale. fading you could not have been pale. fading she could not have been pale. fading we could not have been pale. fading you could not have been pale. fading they could not have been pale. fading
Interrogative form
Simple form
could I pale. fade? could you pale. fade? could she pale. fade? could we pale. fade? could you pale. fade? could they pale. fade?
V-ing form
could I be pale. fading? could you be pale. fading? could she be pale. fading? could we be pale. fading? could you be pale. fading? could they be pale. fading?
Perfect
could I have pale. faded? could you have pale. faded? could she have pale. faded? could we have pale. faded? could you have pale. faded? could they have pale. faded?
V-ing perfect
could I have been pale. fading? could you have been pale. fading? could she have been pale. fading? could we have been pale. fading? could you have been pale. fading? could they have been pale. fading?
Interro-negative form
Simple form
could I not pale. fade? could you not pale. fade? could she not pale. fade? could we not pale. fade? could you not pale. fade? could they not pale. fade?
V-ing form
could I not be pale. fading? could you not be pale. fading? could she not be pale. fading? could we not be pale. fading? could you not be pale. fading? could they not be pale. fading?
Perfect
could I not have pale. faded? could you not have pale. faded? could she not have pale. faded? could we not have pale. faded? could you not have pale. faded? could they not have pale. faded?
V-ing perfect
could I not have been pale. fading? could you not have been pale. fading? could she not have been pale. fading? could we not have been pale. fading? could you not have been pale. fading? could they not have been pale. fading?