English verb conjugation
COULD PRETRAIN

Regular verb: pretrain - pretrained - pretrained

Affirmation

Simple form	V-ing form
I could pretrain you could pretrain she could pretrain we could pretrain you could pretrain they could pretrain	I could be pretraining you could be pretraining she could be pretraining we could be pretraining you could be pretraining they could be pretraining
Perfect	V-ing perfect
I could have pretrained you could have pretrained she could have pretrained we could have pretrained you could have pretrained they could have pretrained	I could have been pretraining you could have been pretraining she could have been pretraining we could have been pretraining you could have been pretraining they could have been pretraining

Negation

Simple form	V-ing form
I could not pretrain you could not pretrain she could not pretrain we could not pretrain you could not pretrain they could not pretrain	I could not be pretraining you could not be pretraining she could not be pretraining we could not be pretraining you could not be pretraining they could not be pretraining
Perfect	V-ing perfect
I could not have pretrained you could not have pretrained she could not have pretrained we could not have pretrained you could not have pretrained they could not have pretrained	I could not have been pretraining you could not have been pretraining she could not have been pretraining we could not have been pretraining you could not have been pretraining they could not have been pretraining

Interrogative form

Simple form	V-ing form
could I pretrain? could you pretrain? could she pretrain? could we pretrain? could you pretrain? could they pretrain?	could I be pretraining? could you be pretraining? could she be pretraining? could we be pretraining? could you be pretraining? could they be pretraining?
Perfect	V-ing perfect
could I have pretrained? could you have pretrained? could she have pretrained? could we have pretrained? could you have pretrained? could they have pretrained?	could I have been pretraining? could you have been pretraining? could she have been pretraining? could we have been pretraining? could you have been pretraining? could they have been pretraining?

Interro-negative form

Simple form	V-ing form
could I not pretrain? could you not pretrain? could she not pretrain? could we not pretrain? could you not pretrain? could they not pretrain?	could I not be pretraining? could you not be pretraining? could she not be pretraining? could we not be pretraining? could you not be pretraining? could they not be pretraining?
Perfect	V-ing perfect
could I not have pretrained? could you not have pretrained? could she not have pretrained? could we not have pretrained? could you not have pretrained? could they not have pretrained?	could I not have been pretraining? could you not have been pretraining? could she not have been pretraining? could we not have been pretraining? could you not have been pretraining? could they not have been pretraining?