[[8, 10], [9, 11], [10, 12], [16, 17], [17, 18], [18, 19], [14, 30], [13, 29], [12, 28], [6, 23], [5, 22], [4, 21]] ........................................ ........................................ ...................*.................... ................../.\................... ................./...\.................. ................/.....\................. ........*======*.......*======*......... .........\.................../.......... ..........\................./........... ...........\.............../............ ............*.............*............. .........../...............\............ ........../.................\........... ........./...................\.......... ........*======*.......*======*......... ................\...../................. .................\.../.................. ..................\./................... ...................*.................... ........................................