1988-09-28 /bb-bt99n-bb/01/backup.x20 1988-09-28 /bb-jr93g-bb/20/7,6/ap020/backup.x20 1988-09-28 /bb-jr93h-bb/20/7,6/ap020/backup.x20 1989-06-23 /bb-jr93i-bb/20/7,6/ap020/backup.x20 1989-06-23 /bb-jr93j-bb/20/7,6/ap020/backup.x20