English verb conjugation
COULD CRANK

Regular verb: crank - cranked - cranked

Affirmation

Simple form	V-ing form
I could crank you could crank he could crank we could crank you could crank they could crank	I could be cranking you could be cranking he could be cranking we could be cranking you could be cranking they could be cranking
Perfect	V-ing perfect
I could have cranked you could have cranked he could have cranked we could have cranked you could have cranked they could have cranked	I could have been cranking you could have been cranking he could have been cranking we could have been cranking you could have been cranking they could have been cranking

Negation

Simple form	V-ing form
I could not crank you could not crank he could not crank we could not crank you could not crank they could not crank	I could not be cranking you could not be cranking he could not be cranking we could not be cranking you could not be cranking they could not be cranking
Perfect	V-ing perfect
I could not have cranked you could not have cranked he could not have cranked we could not have cranked you could not have cranked they could not have cranked	I could not have been cranking you could not have been cranking he could not have been cranking we could not have been cranking you could not have been cranking they could not have been cranking

Interrogative form

Simple form	V-ing form
could I crank? could you crank? could he crank? could we crank? could you crank? could they crank?	could I be cranking? could you be cranking? could he be cranking? could we be cranking? could you be cranking? could they be cranking?
Perfect	V-ing perfect
could I have cranked? could you have cranked? could he have cranked? could we have cranked? could you have cranked? could they have cranked?	could I have been cranking? could you have been cranking? could he have been cranking? could we have been cranking? could you have been cranking? could they have been cranking?

Interro-negative form

Simple form	V-ing form
could I not crank? could you not crank? could he not crank? could we not crank? could you not crank? could they not crank?	could I not be cranking? could you not be cranking? could he not be cranking? could we not be cranking? could you not be cranking? could they not be cranking?
Perfect	V-ing perfect
could I not have cranked? could you not have cranked? could he not have cranked? could we not have cranked? could you not have cranked? could they not have cranked?	could I not have been cranking? could you not have been cranking? could he not have been cranking? could we not have been cranking? could you not have been cranking? could they not have been cranking?