. . # # . # . # . .. ## # #_ . . 3 ...# . . . . # # #.# . . # # ### # ## # . ## .. ....... .. . .# #. #...#.≈ . ###..# . .## #.. . .. ## ... .## a # # # . ..... # ## # . # . #. ........# ## # # ### #'# . # # #.#..# # ## # #.##. #.# ## # # #.# #D# . #W# # . ######Y##.##... #......3.....# #......###.##.# #...... .# #...... # .... .. #...... ####'##