X<|----- forward_chashinai_siding_1.include
| X<---- forward_chashinai_siding_2.include
\ |
 \|
  X<---- forward_chashinai_sunagawa.include
  |
X<|----- forward_sunagawa_siding.include
| |
\ |
 \|
  |
  X<---- forward_sunagawa_nakafurano.include
  |
  | X<|---------- forward_nakafurano_siding_1.include
  | | X<--------- forward_nakafurano_siding_2.include
  | | |
  | |/
  | /
  |/
  |
  X<---- forward_nakafurano_utashinai.include
  |
  |\
  | |
  X<|--- forward_utashinai_minaminaka.include
  | |
 /| |
| | |
| X<|--- forward_minaminaka_1.include
X<|-|--- forward_minaminaka_2.include
    |
   /
  |
  X<---- forward_utashinai_shimokanesawa.include
  |
  | X-|-|-|------ forward_shimokanesawa_4.include (includes 2)
  | | X<|-|------ forward_shimokanesawa_5.include (includes 2)
  | | | R<|------ forward_shimokanesawa_6.include (includes 2)
  | | | | R<----- forward_shimokanesawa_7.include (includes 2)
  | | | L<|------ forward_shimokanesawa_8.include
  | | | | L<----- forward_shimokanesawa_9.include
  | | | | |
  | |/  |/
  | |   |
  | |   |
  | |  /|
  | | R-L-------- (R: 6/7, L: 8/9)
  | |/  |
  [ |   |
  |X|<--|-------- forward_shimokanesawa_1.include (includes 2)
  | ]   |
  | O<--|-------- (forward_shimokanesawa_2.include)
  | |   |
  X<|---|-------- forward_shimokanesawa_pass.include
  | |   |
  | |  /
  | | /
  | |/
  | |
  | X<----------- forward_shimokanesawa_3.include
  | |
  |/
  |
  X<------------- forward_shimokanesawa_yamauchi_central.include
  |
  |   *<--------- (Takahagi Line)
  R   |
  |  /|
  | X<|---------- forward_yamauchi_central_l_r.include
  |/  |
  |   X<--------- forward_yamauchi_central_l_l.include
  |\  |
  | X<|---------- forward_yamauchi_central_r_l.include
  |  \|
  R<--|---------- forward_yamauchi_central_r_r.include (only for R->R)
  X<--|---------- forward_yamauchi_central_ashikari.include
  |   |
  |  /
  | /
  |/
  |
 /|
| |
X<|-------------- forward_yamauchi_central_kawarada.include
| |
| |\
| | |
| | X<--------- forward_ashikari_siding.include
| *<----------- (Takahagi Line)
|
 \
  |
*<|------------ (Uchiike Line)
| |
\ |
 \|
  |
  X<----------- forward_kawarada_common.include
  |
 /|
| |
*<|------------ (Uchiike Line)
  |
  X<----------- forward_kawarada_jimokuji_east.include
  |
 /|
| |
X<|-------------- forward_jimokuji_east_1.include
| X<------------- forward_jimokuji_east_2.include