.,●...●
●........●....●
.●.......●......●
...●.......●..●
......●
........●
.........●
.........●
......●
....●
..●...............●
.●............●......●
●...........●.........●
.●...........●........●
..●............●....●
......●..●..●..●
......................●
........................●
..........................●
...........................●
...........................●
.........................●
.......................●
.....................●...................●......●...................................................●...●.....●
....................●...............●..................●.......................................●............●.
...................●...........●...........................●.............................●...............●.....●
...................●........●....................................●..................●.................●..........●
.....................●..●................................................●.....●.....................●............●
.........................................................................................................●...........●
............................................................................................................●.....●