English verb conjugation
COULD SPECK

Regular verb: speck - specked - specked

Affirmation

Simple form	V-ing form
I could speck you could speck she could speck we could speck you could speck they could speck	I could be specking you could be specking she could be specking we could be specking you could be specking they could be specking
Perfect	V-ing perfect
I could have specked you could have specked she could have specked we could have specked you could have specked they could have specked	I could have been specking you could have been specking she could have been specking we could have been specking you could have been specking they could have been specking

Negation

Simple form	V-ing form
I could not speck you could not speck she could not speck we could not speck you could not speck they could not speck	I could not be specking you could not be specking she could not be specking we could not be specking you could not be specking they could not be specking
Perfect	V-ing perfect
I could not have specked you could not have specked she could not have specked we could not have specked you could not have specked they could not have specked	I could not have been specking you could not have been specking she could not have been specking we could not have been specking you could not have been specking they could not have been specking

Interrogative form

Simple form	V-ing form
could I speck? could you speck? could she speck? could we speck? could you speck? could they speck?	could I be specking? could you be specking? could she be specking? could we be specking? could you be specking? could they be specking?
Perfect	V-ing perfect
could I have specked? could you have specked? could she have specked? could we have specked? could you have specked? could they have specked?	could I have been specking? could you have been specking? could she have been specking? could we have been specking? could you have been specking? could they have been specking?

Interro-negative form

Simple form	V-ing form
could I not speck? could you not speck? could she not speck? could we not speck? could you not speck? could they not speck?	could I not be specking? could you not be specking? could she not be specking? could we not be specking? could you not be specking? could they not be specking?
Perfect	V-ing perfect
could I not have specked? could you not have specked? could she not have specked? could we not have specked? could you not have specked? could they not have specked?	could I not have been specking? could you not have been specking? could she not have been specking? could we not have been specking? could you not have been specking? could they not have been specking?