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