R-1 (SS-78) R-2 (SS-79) R-3 (SS-80) R-4 (SS-81) R-5 (SS-82) R-6 (SS-83) R-7 (SS-84) R-8 (SS-85) R-9 (SS-86) R-10 (SS-87) R-11 (SS-88) R-12 (SS-89) R-13 (SS-90) R-14 (SS-91)