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