I could purse-seine you could purse-seine he could purse-seine we could purse-seine you could purse-seine they could purse-seine
V-ing form
I could be purse-seining you could be purse-seining he could be purse-seining we could be purse-seining you could be purse-seining they could be purse-seining
Perfect
I could have purse-seined you could have purse-seined he could have purse-seined we could have purse-seined you could have purse-seined they could have purse-seined
V-ing perfect
I could have been purse-seining you could have been purse-seining he could have been purse-seining we could have been purse-seining you could have been purse-seining they could have been purse-seining
Negation
Simple form
I couldn't purse-seine you couldn't purse-seine he couldn't purse-seine we couldn't purse-seine you couldn't purse-seine they couldn't purse-seine
V-ing form
I couldn't be purse-seining you couldn't be purse-seining he couldn't be purse-seining we couldn't be purse-seining you couldn't be purse-seining they couldn't be purse-seining
Perfect
I couldn't have purse-seined you couldn't have purse-seined he couldn't have purse-seined we couldn't have purse-seined you couldn't have purse-seined they couldn't have purse-seined
V-ing perfect
I couldn't have been purse-seining you couldn't have been purse-seining he couldn't have been purse-seining we couldn't have been purse-seining you couldn't have been purse-seining they couldn't have been purse-seining
Interrogative form
Simple form
could I purse-seine? could you purse-seine? could he purse-seine? could we purse-seine? could you purse-seine? could they purse-seine?
V-ing form
could I be purse-seining? could you be purse-seining? could he be purse-seining? could we be purse-seining? could you be purse-seining? could they be purse-seining?
Perfect
could I have purse-seined? could you have purse-seined? could he have purse-seined? could we have purse-seined? could you have purse-seined? could they have purse-seined?
V-ing perfect
could I have been purse-seining? could you have been purse-seining? could he have been purse-seining? could we have been purse-seining? could you have been purse-seining? could they have been purse-seining?
Interro-negative form
Simple form
couldn't I purse-seine? couldn't you purse-seine? couldn't he purse-seine? couldn't we purse-seine? couldn't you purse-seine? couldn't they purse-seine?
V-ing form
couldn't I be purse-seining? couldn't you be purse-seining? couldn't he be purse-seining? couldn't we be purse-seining? couldn't you be purse-seining? couldn't they be purse-seining?
Perfect
couldn't I have purse-seined? couldn't you have purse-seined? couldn't he have purse-seined? couldn't we have purse-seined? couldn't you have purse-seined? couldn't they have purse-seined?
V-ing perfect
couldn't I have been purse-seining? couldn't you have been purse-seining? couldn't he have been purse-seining? couldn't we have been purse-seining? couldn't you have been purse-seining? couldn't they have been purse-seining?