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

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I couldn't potty-train
you couldn't potty-train
he couldn't potty-train
we couldn't potty-train
you couldn't potty-train
they couldn't potty-train 	I couldn't be potty-training
you couldn't be potty-training
he couldn't be potty-training
we couldn't be potty-training
you couldn't be potty-training
they couldn't be potty-training	I couldn't have potty-trained
you couldn't have potty-trained
he couldn't have potty-trained
we couldn't have potty-trained
you couldn't have potty-trained
they couldn't have potty-trained	I couldn't have been potty-training
you couldn't have been potty-training
he couldn't have been potty-training
we couldn't have been potty-training
you couldn't have been potty-training
they couldn't have been potty-training	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
couldn't I potty-train?
couldn't you potty-train?
couldn't he potty-train?
couldn't we potty-train?
couldn't you potty-train?
couldn't they potty-train? 	couldn't I be potty-training?
couldn't you be potty-training?
couldn't he be potty-training?
couldn't we be potty-training?
couldn't you be potty-training?
couldn't they be potty-training? 	couldn't I have potty-trained?
couldn't you have potty-trained?
couldn't he have potty-trained?
couldn't we have potty-trained?
couldn't you have potty-trained?
couldn't they have potty-trained? 	couldn't I have been potty-training?
couldn't you have been potty-training?
couldn't he have been potty-training?
couldn't we have been potty-training?
couldn't you have been potty-training?
couldn't they have been potty-training?