I could flocculate you could flocculate he could flocculate we could flocculate you could flocculate they could flocculate
V-ing form
I could be flocculating you could be flocculating he could be flocculating we could be flocculating you could be flocculating they could be flocculating
Perfect
I could have flocculated you could have flocculated he could have flocculated we could have flocculated you could have flocculated they could have flocculated
V-ing perfect
I could have been flocculating you could have been flocculating he could have been flocculating we could have been flocculating you could have been flocculating they could have been flocculating
Negation
Simple form
I couldn't flocculate you couldn't flocculate he couldn't flocculate we couldn't flocculate you couldn't flocculate they couldn't flocculate
V-ing form
I couldn't be flocculating you couldn't be flocculating he couldn't be flocculating we couldn't be flocculating you couldn't be flocculating they couldn't be flocculating
Perfect
I couldn't have flocculated you couldn't have flocculated he couldn't have flocculated we couldn't have flocculated you couldn't have flocculated they couldn't have flocculated
V-ing perfect
I couldn't have been flocculating you couldn't have been flocculating he couldn't have been flocculating we couldn't have been flocculating you couldn't have been flocculating they couldn't have been flocculating
Interrogative form
Simple form
could I flocculate? could you flocculate? could he flocculate? could we flocculate? could you flocculate? could they flocculate?
V-ing form
could I be flocculating? could you be flocculating? could he be flocculating? could we be flocculating? could you be flocculating? could they be flocculating?
Perfect
could I have flocculated? could you have flocculated? could he have flocculated? could we have flocculated? could you have flocculated? could they have flocculated?
V-ing perfect
could I have been flocculating? could you have been flocculating? could he have been flocculating? could we have been flocculating? could you have been flocculating? could they have been flocculating?
Interro-negative form
Simple form
couldn't I flocculate? couldn't you flocculate? couldn't he flocculate? couldn't we flocculate? couldn't you flocculate? couldn't they flocculate?
V-ing form
couldn't I be flocculating? couldn't you be flocculating? couldn't he be flocculating? couldn't we be flocculating? couldn't you be flocculating? couldn't they be flocculating?
Perfect
couldn't I have flocculated? couldn't you have flocculated? couldn't he have flocculated? couldn't we have flocculated? couldn't you have flocculated? couldn't they have flocculated?
V-ing perfect
couldn't I have been flocculating? couldn't you have been flocculating? couldn't he have been flocculating? couldn't we have been flocculating? couldn't you have been flocculating? couldn't they have been flocculating?