English verb conjugation
COULD LARK

Regular verb: lark - larked - larked

Affirmation

Simple form	V-ing form
I could lark you could lark he could lark we could lark you could lark they could lark	I could be larking you could be larking he could be larking we could be larking you could be larking they could be larking
Perfect	V-ing perfect
I could have larked you could have larked he could have larked we could have larked you could have larked they could have larked	I could have been larking you could have been larking he could have been larking we could have been larking you could have been larking they could have been larking

Negation

Simple form	V-ing form
I could not lark you could not lark he could not lark we could not lark you could not lark they could not lark	I could not be larking you could not be larking he could not be larking we could not be larking you could not be larking they could not be larking
Perfect	V-ing perfect
I could not have larked you could not have larked he could not have larked we could not have larked you could not have larked they could not have larked	I could not have been larking you could not have been larking he could not have been larking we could not have been larking you could not have been larking they could not have been larking

Interrogative form

Simple form	V-ing form
could I lark? could you lark? could he lark? could we lark? could you lark? could they lark?	could I be larking? could you be larking? could he be larking? could we be larking? could you be larking? could they be larking?
Perfect	V-ing perfect
could I have larked? could you have larked? could he have larked? could we have larked? could you have larked? could they have larked?	could I have been larking? could you have been larking? could he have been larking? could we have been larking? could you have been larking? could they have been larking?

Interro-negative form

Simple form	V-ing form
could I not lark? could you not lark? could he not lark? could we not lark? could you not lark? could they not lark?	could I not be larking? could you not be larking? could he not be larking? could we not be larking? could you not be larking? could they not be larking?
Perfect	V-ing perfect
could I not have larked? could you not have larked? could he not have larked? could we not have larked? could you not have larked? could they not have larked?	could I not have been larking? could you not have been larking? could he not have been larking? could we not have been larking? could you not have been larking? could they not have been larking?