| ooooooo hallway is here oxxxxxo obbbbbo oxxxxxo ob..g..bo obxxxbo o..dsd..o ooodooo |
| o | o | o | o | o | o | o |
| . | . | . | . | . | . | . |
| x | x | x | x | x | x | x |
| . | . | . | . | . | . | . |
| o | x | x | x | x | x | o |
| o | b | b | b | b | b | o |
| o | x | x | x | x | x | o |
| o | c | . | G | . | c | o |
| o | b | x | x | x | b | o |
| o | b | d | S | d | b | o |
| o | o | o | d | o | o | o |
| . | . | . | . | . | . | . |
| o | o | o | o | o | o | o |
Also, are chains like cages in that they'll become unbuilt once the lever is pulled? or will the chain stay there?