add switch (0,0) -> (5,0),(0,5)
add switch (10,0) -> (5,0),(10,5)
set switch 1 position (0,5)
set switch 2 position (10,5)
create train-set a 1 1 true true
add train 1 a-1
put train 1 at (5,0) in direction 0,1
put train 1 at (5,0) in direction 0,-1
put train 1 at (5,0) in direction 1,0
put train 1 at (5,0) in direction -1,0
create train-set a 3 3 true true
add train 2 a-3
put train 2 at (5,0) in direction 0,1
put train 2 at (5,0) in direction 0,-1
put train 2 at (5,0) in direction 1,0
put train 2 at (5,0) in direction -1,0
create train-set a 5 5 true true
add train 3 a-5
put train 3 at (5,0) in direction 0,1
put train 3 at (5,0) in direction 0,-1
put train 3 at (5,0) in direction 1,0
put train 3 at (5,0) in direction -1,0
create train-set a 8 8 true true
add train 4 a-8
put train 4 at (5,0) in direction 0,1
put train 4 at (5,0) in direction 0,-1
put train 4 at (5,0) in direction 1,0
put train 4 at (5,0) in direction -1,0
create train-set a 10 10 true true
add train 5 a-10
put train 5 at (5,0) in direction 0,1
put train 5 at (5,0) in direction 0,-1
put train 5 at (5,0) in direction 1,0
put train 5 at (5,0) in direction -1,0
create train-set a 12 12 true true
add train 6 a-12
put train 6 at (5,0) in direction 0,1
put train 6 at (5,0) in direction 0,-1
put train 6 at (5,0) in direction 1,0
put train 6 at (5,0) in direction -1,0
step 2000
add track (-5,0) -> (0,0)
put train 2 at (-5,0) in direction -1,0
step 420
put train 2 at (-5,0) in direction 0,1
step 420
put train 2 at (-5,0) in direction 0,-1
step 420
put train 2 at (-5,0) in direction 1,0
step 420
add switch (-10,0) -> (-5,0),(-10,5)
set switch 4 position (-10,5)
put train 2 at (-5,0) in direction -1,0
step 420
put train 2 at (-5,0) in direction 0,1
step 420
put train 2 at (-5,0) in direction 0,-1
step 420
put train 2 at (-5,0) in direction 1,0
step 420
delete track 4
add switch (-5,5) -> (-5,0),(-10,5)
set switch 4 position (-10,5)
put train 2 at (-5,0) in direction -1,0
step 420
put train 2 at (-5,0) in direction 0,1
step 420
put train 2 at (-5,0) in direction 0,-1
step 420
put train 2 at (-5,0) in direction 1,0
step 420
exit