  X<-------------- backward_hitachiomiya_izumozaki_north.include
  |
X<|--------------- backward_izumozaki_north_siding.include
| |
|/
|
X<---------------- backward_izumozaki_north_izumozaki_south.include
L<---------------- backward_izumozaki_south_section_1.include (for mainline)
R<---------------- backward_izumozaki_south_section_2.include (for siding)
|
| X<-------------- backward_koriyama_izumozaki_south.include
| L<-------------- backward_izumozaki_south_section_3.include (for mainline)
| R<-------------- backward_izumozaki_south_section_4.include (for siding)
| |
 \|
  |
  X<-------------- backward_izumozaki_south.include
  |
 /|
| |\
R R L
| X<|------------- backward_izumozaki_south_siding_1.include
X<|-|------------- backward_izumozaki_south_siding_2.include
    |
   /
  |
  X<-------------- backward_izumozaki_south_natori.include
X<|--------------- backward_natori_siding.include
| |
 \|
  |
  X<-------------- backward_natori_onomichi.include
*<|--------------- (Onomichi Depot)
| |
 \|
  |
  X<-------------- backward_onomichi_tawaramoto.include
*<|--------------- (Takahagi Line)
| |
 \|
  |
  X<-------------- backward_tawaramoto_siding_common.include (includes 1/2/3/4)
  |
  |\
 /| \
| | |\
| | | |
| | | O<---------- backward_tawaramoto_siding_1.include (included by common)
| | O<|----------- backward_tawaramoto_siding_2.include (included by common)
| O<|-|----------- backward_tawaramoto_siding_3.include (included by common)
O<|-|-|----------- backward_tawaramoto_siding_4.include (included by common)