It's like "Ibb or Smb" and "Ib or Smb" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib" and "Ib"