===============
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
(前項参照)
===============
===============
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
=============== ↑↓
(前項参照)
===============