I could flash-freeze you could flash-freeze he could flash-freeze we could flash-freeze you could flash-freeze they could flash-freeze
V-ing form
I could be flash-freezing you could be flash-freezing he could be flash-freezing we could be flash-freezing you could be flash-freezing they could be flash-freezing
Perfect
I could have flash-frozen you could have flash-frozen he could have flash-frozen we could have flash-frozen you could have flash-frozen they could have flash-frozen
V-ing perfect
I could have been flash-freezing you could have been flash-freezing he could have been flash-freezing we could have been flash-freezing you could have been flash-freezing they could have been flash-freezing
Negation
Simple form
I couldn't flash-freeze you couldn't flash-freeze he couldn't flash-freeze we couldn't flash-freeze you couldn't flash-freeze they couldn't flash-freeze
V-ing form
I couldn't be flash-freezing you couldn't be flash-freezing he couldn't be flash-freezing we couldn't be flash-freezing you couldn't be flash-freezing they couldn't be flash-freezing
Perfect
I couldn't have flash-frozen you couldn't have flash-frozen he couldn't have flash-frozen we couldn't have flash-frozen you couldn't have flash-frozen they couldn't have flash-frozen
V-ing perfect
I couldn't have been flash-freezing you couldn't have been flash-freezing he couldn't have been flash-freezing we couldn't have been flash-freezing you couldn't have been flash-freezing they couldn't have been flash-freezing
Interrogative form
Simple form
could I flash-freeze? could you flash-freeze? could he flash-freeze? could we flash-freeze? could you flash-freeze? could they flash-freeze?
V-ing form
could I be flash-freezing? could you be flash-freezing? could he be flash-freezing? could we be flash-freezing? could you be flash-freezing? could they be flash-freezing?
Perfect
could I have flash-frozen? could you have flash-frozen? could he have flash-frozen? could we have flash-frozen? could you have flash-frozen? could they have flash-frozen?
V-ing perfect
could I have been flash-freezing? could you have been flash-freezing? could he have been flash-freezing? could we have been flash-freezing? could you have been flash-freezing? could they have been flash-freezing?
Interro-negative form
Simple form
couldn't I flash-freeze? couldn't you flash-freeze? couldn't he flash-freeze? couldn't we flash-freeze? couldn't you flash-freeze? couldn't they flash-freeze?
V-ing form
couldn't I be flash-freezing? couldn't you be flash-freezing? couldn't he be flash-freezing? couldn't we be flash-freezing? couldn't you be flash-freezing? couldn't they be flash-freezing?
Perfect
couldn't I have flash-frozen? couldn't you have flash-frozen? couldn't he have flash-frozen? couldn't we have flash-frozen? couldn't you have flash-frozen? couldn't they have flash-frozen?
V-ing perfect
couldn't I have been flash-freezing? couldn't you have been flash-freezing? couldn't he have been flash-freezing? couldn't we have been flash-freezing? couldn't you have been flash-freezing? couldn't they have been flash-freezing?