English verb conjugation
COULD SPECK

Regular verb: speck - specked - specked

Affirmation

Simple form	V-ing form
I could speck you could speck he could speck we could speck you could speck they could speck	I could be specking you could be specking he 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 he 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 he 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 couldn't speck you couldn't speck he couldn't speck we couldn't speck you couldn't speck they couldn't speck	I couldn't be specking you couldn't be specking he couldn't be specking we couldn't be specking you couldn't be specking they couldn't be specking
Perfect	V-ing perfect
I couldn't have specked you couldn't have specked he couldn't have specked we couldn't have specked you couldn't have specked they couldn't have specked	I couldn't have been specking you couldn't have been specking he couldn't have been specking we couldn't have been specking you couldn't have been specking they couldn't have been specking

Interrogative form

Simple form	V-ing form
could I speck? could you speck? could he speck? could we speck? could you speck? could they speck?	could I be specking? could you be specking? could he 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 he 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 he 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
couldn't I speck? couldn't you speck? couldn't he speck? couldn't we speck? couldn't you speck? couldn't they speck?	couldn't I be specking? couldn't you be specking? couldn't he be specking? couldn't we be specking? couldn't you be specking? couldn't they be specking?
Perfect	V-ing perfect
couldn't I have specked? couldn't you have specked? couldn't he have specked? couldn't we have specked? couldn't you have specked? couldn't they have specked?	couldn't I have been specking? couldn't you have been specking? couldn't he have been specking? couldn't we have been specking? couldn't you have been specking? couldn't they have been specking?