English verb conjugation
COULD PIGEONHOLE

Regular verb: pigeonhole - pigeonholed - pigeonholed

Affirmation

Simple form	V-ing form
I could pigeonhole you could pigeonhole he could pigeonhole we could pigeonhole you could pigeonhole they could pigeonhole	I could be pigeonholing you could be pigeonholing he could be pigeonholing we could be pigeonholing you could be pigeonholing they could be pigeonholing
Perfect	V-ing perfect
I could have pigeonholed you could have pigeonholed he could have pigeonholed we could have pigeonholed you could have pigeonholed they could have pigeonholed	I could have been pigeonholing you could have been pigeonholing he could have been pigeonholing we could have been pigeonholing you could have been pigeonholing they could have been pigeonholing

Negation

Simple form	V-ing form
I could not pigeonhole you could not pigeonhole he could not pigeonhole we could not pigeonhole you could not pigeonhole they could not pigeonhole	I could not be pigeonholing you could not be pigeonholing he could not be pigeonholing we could not be pigeonholing you could not be pigeonholing they could not be pigeonholing
Perfect	V-ing perfect
I could not have pigeonholed you could not have pigeonholed he could not have pigeonholed we could not have pigeonholed you could not have pigeonholed they could not have pigeonholed	I could not have been pigeonholing you could not have been pigeonholing he could not have been pigeonholing we could not have been pigeonholing you could not have been pigeonholing they could not have been pigeonholing

Interrogative form

Simple form	V-ing form
could I pigeonhole? could you pigeonhole? could he pigeonhole? could we pigeonhole? could you pigeonhole? could they pigeonhole?	could I be pigeonholing? could you be pigeonholing? could he be pigeonholing? could we be pigeonholing? could you be pigeonholing? could they be pigeonholing?
Perfect	V-ing perfect
could I have pigeonholed? could you have pigeonholed? could he have pigeonholed? could we have pigeonholed? could you have pigeonholed? could they have pigeonholed?	could I have been pigeonholing? could you have been pigeonholing? could he have been pigeonholing? could we have been pigeonholing? could you have been pigeonholing? could they have been pigeonholing?

Interro-negative form

Simple form	V-ing form
could I not pigeonhole? could you not pigeonhole? could he not pigeonhole? could we not pigeonhole? could you not pigeonhole? could they not pigeonhole?	could I not be pigeonholing? could you not be pigeonholing? could he not be pigeonholing? could we not be pigeonholing? could you not be pigeonholing? could they not be pigeonholing?
Perfect	V-ing perfect
could I not have pigeonholed? could you not have pigeonholed? could he not have pigeonholed? could we not have pigeonholed? could you not have pigeonholed? could they not have pigeonholed?	could I not have been pigeonholing? could you not have been pigeonholing? could he not have been pigeonholing? could we not have been pigeonholing? could you not have been pigeonholing? could they not have been pigeonholing?