 Rail_left |
 Rail_up |
 Road_down |
 Road_upperright |
 Rail_lowerright |
 Rail_alone |
 Road_lowerleft |
 Rail_right |
 Rail_lowerleft |
 Rail_upperright |
 Rail_upperleft |
 Road_right |
 Rail_down |
 Road_left |
 Road_upperleft |
 Road_alone |
 Road_lowerright |
 Road_up |