CREATE TABLE table_203_303 (id DECIMAL, "tribunal" TEXT, "number of autos da fe" DECIMAL, "executions in persona" DECIMAL, "executions in effigie" DECIMAL, "penanced" DECIMAL, "total" DECIMAL)

which spanish tribunal was the only one to not have any autos da fe during this time period ?
SELECT "tribunal" FROM table_203_303 WHERE "number of autos da fe" = 0
SELECT "tribunal" FROM "table_203_303" WHERE "number of autos da fe" = 0