30 30
11
1 1 N
1 3 S
2 1 V
2 3 S
10 1 V
10 4 S
30 1 V
30 4 S
20 3 N
21 2 V
21 4 E
3
FFL
FFF
FFL
FFF
FFL
RFF
FFF
RRF
LLF
RRF
LLF

