['9686M83G18 AND G20 STG 15 TOTAL NO. VANES REQUIRED 88.', '9686M83G22 STG 15 TOTAL NO. VANES REQUIRED 89.', '9686M83G18 AND G20 STG 15 VANE UPPER AND LOWER CASE POSITION AND 9686M83G22 STG 15 VANE L