+--+               +--+
    |BD|               |hs|
    |AC|               |ti|
 +--+--+--+--+      +--+--+--+--+
 |QR|EF|IJ|MN|  __\ |.~| g|s |dd|
 |GH|KL|OP|ST|  ~~/ |et|pa|ed|~~|
 +--+--+--+--+      +--+--+--+--+
    |UV|               |~~|
    |WX|               |~~|
    +--+               +--+