cometieras

form-of imperfect second-person singular subjunctive

cometerの二人称単数未完了接続法

English Meaning

second-person singular imperfect subjunctive of cometer

Si cometieras un error, aprenderías de la experiencia.

もしあなたが間違いを犯したなら、経験から学んでいくでしょう.

If you were to commit an error, you would learn from the experience.