(79, 78, 2, 'S')
(79, 80, 2, 'R')
(81, 80, 2, 'S')
(81, 82, 2, 'R')
(83, 82, 2, 'S')
(83, 84, 2, 'R')
(85, 84, 2, 'S')
(85, 86, 2, 'R')
(87, 86, 2, 'S')
(87, 88, 2, 'R')
(89, 88, 2, 'S')
(89, 90, 2, 'R')
(90, 91, 2, 'S')
