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