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