!------?      D !-? D      !------?"
|......\------/.| |.\------/. ....|"
|.R--L..........| |..........R--L.|"
|......!-?.!--?.| |.!--?.!-?......|"
\----L*| |.|  |.| |.|  |.| |*R----/"
 ......\-/.\--/.\-/.\--/.\-/...... "
R=---L...........P...........R---=L"
 |.....!--------L.R--------?.....| "
 |.D.D.|...............*...|.D.D.| "
 |.|.U.U.R------? !------L.U.U.|.| "
R/.|.....*......| |............|.\L"
...<----------?.|G|.!---------->..."
R--/          U.\-/ U          \--L"