En pretérito imperfecto de indicativohabía-- I had habías-- You had Él/Ella/Usted. había-- He/she/you (formal) had habíamos-- We had habíais --- you (informal singular) had Ustedes / ellos...
It is spelled 'sí' with an acute accent* on the 'i'.* An acute accent is a small diacritical mark above the letter that is written like the forward slash [ / ] on your keyboard -- from the lower...