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