shouldn't have bought this shirt
Él no debería haber comprado esta camisa.
He shouldn't have bought this shirt.
Usted no debería haber comprado esta camisa.
You shouldn't have bought this shirt.
Yo no debería haber comprado esta camisa.
I shouldn't have bought this shirt.
No debería haber comprado esta camisa.
I shouldn't have bought this shirt.
Ella no debería haber comprado esta camisa.
She shouldn't have bought this shirt.