[156, 157, 158, 159, 160, 161, 169, 168, 170, 171, 167, 166, 165, 164, 163, 162]
(157, 156, 2, 'S')
(157, 158, 2, 'R')
(159, 158, 2, 'S')
(159, 160, 2, 'R')
(161, 160, 2, 'S')
(161, 169, 1, 'SV')
(161, 162, 1, 'R')
(169, 168, 2, 'S')
(169, 170, 1, 'R')
(168, 170, 1, 'SV')
(167, 168, 1, 'R')
(170, 171, 2, 'S')
(167, 166, 1, 'S')
(165, 166, 1, 'R')
(164, 165, 1, 'S')
(163, 164, 1, 'R')
(162, 163, 1, 'S')
