CREATE TABLE table_name_37 (u15_1st_quad VARCHAR(255), open_3rd_viii VARCHAR(255), u16_3rd_viii VARCHAR(255))
Which U15 1st Quad had an Open 3rd VIII of BBC and U16 3rd VIII of BBC?
    
SQL: SELECT u15_1st_quad FROM table_name_37 WHERE open_3rd_viii = "bbc" AND u16_3rd_viii = "bbc"