English verb conjugation
COULD BANK

Regular verb: bank - banked - banked

Affirmation

Simple form	V-ing form
I could bank you could bank he could bank we could bank you could bank they could bank	I could be banking you could be banking he could be banking we could be banking you could be banking they could be banking
Perfect	V-ing perfect
I could have banked you could have banked he could have banked we could have banked you could have banked they could have banked	I could have been banking you could have been banking he could have been banking we could have been banking you could have been banking they could have been banking

Negation

Simple form	V-ing form
I couldn't bank you couldn't bank he couldn't bank we couldn't bank you couldn't bank they couldn't bank	I couldn't be banking you couldn't be banking he couldn't be banking we couldn't be banking you couldn't be banking they couldn't be banking
Perfect	V-ing perfect
I couldn't have banked you couldn't have banked he couldn't have banked we couldn't have banked you couldn't have banked they couldn't have banked	I couldn't have been banking you couldn't have been banking he couldn't have been banking we couldn't have been banking you couldn't have been banking they couldn't have been banking

Interrogative form

Simple form	V-ing form
could I bank? could you bank? could he bank? could we bank? could you bank? could they bank?	could I be banking? could you be banking? could he be banking? could we be banking? could you be banking? could they be banking?
Perfect	V-ing perfect
could I have banked? could you have banked? could he have banked? could we have banked? could you have banked? could they have banked?	could I have been banking? could you have been banking? could he have been banking? could we have been banking? could you have been banking? could they have been banking?

Interro-negative form

Simple form	V-ing form
couldn't I bank? couldn't you bank? couldn't he bank? couldn't we bank? couldn't you bank? couldn't they bank?	couldn't I be banking? couldn't you be banking? couldn't he be banking? couldn't we be banking? couldn't you be banking? couldn't they be banking?
Perfect	V-ing perfect
couldn't I have banked? couldn't you have banked? couldn't he have banked? couldn't we have banked? couldn't you have banked? couldn't they have banked?	couldn't I have been banking? couldn't you have been banking? couldn't he have been banking? couldn't we have been banking? couldn't you have been banking? couldn't they have been banking?