English verb conjugation
COULD POTTY-TRAIN

Regular verb: potty-train - potty-trained - potty-trained

Affirmation

Simple form	V-ing form
I could potty-train you could potty-train he could potty-train we could potty-train you could potty-train they could potty-train	I could be potty-training you could be potty-training he could be potty-training we could be potty-training you could be potty-training they could be potty-training
Perfect	V-ing perfect
I could have potty-trained you could have potty-trained he could have potty-trained we could have potty-trained you could have potty-trained they could have potty-trained	I could have been potty-training you could have been potty-training he could have been potty-training we could have been potty-training you could have been potty-training they could have been potty-training

Negation

Simple form	V-ing form
I could not potty-train you could not potty-train he could not potty-train we could not potty-train you could not potty-train they could not potty-train	I could not be potty-training you could not be potty-training he could not be potty-training we could not be potty-training you could not be potty-training they could not be potty-training
Perfect	V-ing perfect
I could not have potty-trained you could not have potty-trained he could not have potty-trained we could not have potty-trained you could not have potty-trained they could not have potty-trained	I could not have been potty-training you could not have been potty-training he could not have been potty-training we could not have been potty-training you could not have been potty-training they could not have been potty-training

Interrogative form

Simple form	V-ing form
could I potty-train? could you potty-train? could he potty-train? could we potty-train? could you potty-train? could they potty-train?	could I be potty-training? could you be potty-training? could he be potty-training? could we be potty-training? could you be potty-training? could they be potty-training?
Perfect	V-ing perfect
could I have potty-trained? could you have potty-trained? could he have potty-trained? could we have potty-trained? could you have potty-trained? could they have potty-trained?	could I have been potty-training? could you have been potty-training? could he have been potty-training? could we have been potty-training? could you have been potty-training? could they have been potty-training?

Interro-negative form

Simple form	V-ing form
could I not potty-train? could you not potty-train? could he not potty-train? could we not potty-train? could you not potty-train? could they not potty-train?	could I not be potty-training? could you not be potty-training? could he not be potty-training? could we not be potty-training? could you not be potty-training? could they not be potty-training?
Perfect	V-ing perfect
could I not have potty-trained? could you not have potty-trained? could he not have potty-trained? could we not have potty-trained? could you not have potty-trained? could they not have potty-trained?	could I not have been potty-training? could you not have been potty-training? could he not have been potty-training? could we not have been potty-training? could you not have been potty-training? could they not have been potty-training?