Resultados posibles:
hubiera migrado
-I had migrated
Antecopréterito de subjuntivo para el sujeto yo del verbo migrar.
hubiera migrado
-he/she/you had migrated
Antecopréterito de subjuntivo para el sujeto él/ella/usted del verbo migrar.

migrar

Es decir, tiende a salir con los amigos de su pareja y no a procurarse un grupo social cosa que haría si hubiera migrado por su cuenta.
That is, they tend to go out with the friends of their partner and to not worry about a social group, which they would do if they had immigrated on their own.
Palabra del día
la rebaja