1                _,......,_
 2           _aaQQQQQQWQQQQQQQaa.
 3        ajQQQ??^'        '^??QQQw.
 4     ,aQQP^                    ?4QQa
 5    wQQP                         ^4QQa
 6  ,QQP'          ,aaaaa.           ^$Q6,
 7 ,QQP         ajQQQWWWWQQQw.         4QQ
 8 QQP        aQQP?        ?$QQ.        4Q6
 9jQQ        jQQ'            ?WQr       'QQb
10QQf       ]QQ'              ]QQ        QQ6
11QQf       ]QQ               ]QQ)       QQQ
12QQ6       'QQ6              ]QQ        QQf
13]QQ.       ^4QQaa          .QQP       ,QQ'
14 $QQ.        ^?QQQQf      _yQP       ,QQP
15 ^WQQ6.                  aQQ?       _QQP
16  ^4QQQ6a.            ajQQP'       aQQP
17    ?QQQQQWQaaaaaaajQWQP?        aQQP'
18      ?QQQQP????????^'        saWQP?
19        ^?QQQgaaa._    __aaaQQQP?'
20            '^?QWQQQQQQQQ@??^'