English verb conjugation
COULD BALK

Regular verb: balk - balked - balked

Affirmation

Simple form	V-ing form
I could balk you could balk he could balk we could balk you could balk they could balk	I could be balking you could be balking he could be balking we could be balking you could be balking they could be balking
Perfect	V-ing perfect
I could have balked you could have balked he could have balked we could have balked you could have balked they could have balked	I could have been balking you could have been balking he could have been balking we could have been balking you could have been balking they could have been balking

Negation

Simple form	V-ing form
I couldn't balk you couldn't balk he couldn't balk we couldn't balk you couldn't balk they couldn't balk	I couldn't be balking you couldn't be balking he couldn't be balking we couldn't be balking you couldn't be balking they couldn't be balking
Perfect	V-ing perfect
I couldn't have balked you couldn't have balked he couldn't have balked we couldn't have balked you couldn't have balked they couldn't have balked	I couldn't have been balking you couldn't have been balking he couldn't have been balking we couldn't have been balking you couldn't have been balking they couldn't have been balking

Interrogative form

Simple form	V-ing form
could I balk? could you balk? could he balk? could we balk? could you balk? could they balk?	could I be balking? could you be balking? could he be balking? could we be balking? could you be balking? could they be balking?
Perfect	V-ing perfect
could I have balked? could you have balked? could he have balked? could we have balked? could you have balked? could they have balked?	could I have been balking? could you have been balking? could he have been balking? could we have been balking? could you have been balking? could they have been balking?

Interro-negative form

Simple form	V-ing form
couldn't I balk? couldn't you balk? couldn't he balk? couldn't we balk? couldn't you balk? couldn't they balk?	couldn't I be balking? couldn't you be balking? couldn't he be balking? couldn't we be balking? couldn't you be balking? couldn't they be balking?
Perfect	V-ing perfect
couldn't I have balked? couldn't you have balked? couldn't he have balked? couldn't we have balked? couldn't you have balked? couldn't they have balked?	couldn't I have been balking? couldn't you have been balking? couldn't he have been balking? couldn't we have been balking? couldn't you have been balking? couldn't they have been balking?