Barking Birmingham และ Solihull Stourbridge ตกชั้นจากลีกกี่ฤดูกาล?ไม่จำเป็นที่จะต้องใช้ตารางทั้งหมด
How many seasons did Barking Birmingham & Solihull Stourbridge were relegated from league?It is not neccessary to use all the tables.
 table_23927423_4:  (season [ VARCHAR ] relegated_from_league [ VARCHAR) ]
SELECT COUNT(season) FROM table_23927423_4 WHERE relegated_from_league = "Barking Birmingham & Solihull Stourbridge"