set arrow from 0,2 to 5,2 nohead
set arrow from 5,2 to 5,1 nohead
set arrow from 5,1 to 6,1 nohead
set arrow from 6,1 to 6,2 nohead
set arrow from 6,2 to 7,2 nohead
set arrow from 7,2 to 7,3 nohead
set arrow from 7,3 to 8,3 nohead
set arrow from 8,3 to 8,4 nohead
set arrow from 8,4 to 9,4 nohead
set arrow from 9,4 to 9,3 nohead
set arrow from 9,3 to 13,3 nohead
set arrow from 13,3 to 13,4 nohead
set arrow from 13,4 to 14,4 nohead
set arrow from 14,4 to 14,5 nohead
set arrow from 14,5 to 15,5 nohead
set arrow from 15,5 to 15,6 nohead
set arrow from 15,6 to 16,6 nohead
set arrow from 16,6 to 16,7 nohead
set arrow from 16,7 to 21,7 nohead
set arrow from 21,7 to 21,6 nohead
set arrow from 21,6 to 22,6 nohead
set arrow from 0,19 to 2,19 nohead
set arrow from 2,19 to 2,18 nohead
set arrow from 2,18 to 3,18 nohead
set arrow from 3,18 to 3,17 nohead
set arrow from 3,17 to 4,17 nohead
set arrow from 4,17 to 4,16 nohead
set arrow from 4,16 to 5,16 nohead
set arrow from 5,16 to 5,15 nohead
set arrow from 5,15 to 7,15 nohead
set arrow from 7,15 to 7,14 nohead
set arrow from 7,14 to 10,14 nohead
set arrow from 10,14 to 10,13 nohead
set arrow from 10,13 to 11,13 nohead
set arrow from 11,13 to 11,12 nohead
set arrow from 11,12 to 12,12 nohead
set arrow from 12,12 to 12,11 nohead
set arrow from 12,11 to 13,11 nohead
set arrow from 13,11 to 13,12 nohead
set arrow from 13,12 to 15,12 nohead
set arrow from 15,12 to 15,13 nohead
set arrow from 15,13 to 18,13 nohead
set arrow from 18,13 to 18,18 nohead
set arrow from 18,18 to 19,18 nohead
set arrow from 19,18 to 19,19 nohead
set arrow from 19,19 to 20,19 nohead
set arrow from 20,19 to 20,18 nohead
set arrow from 20,18 to 21,18 nohead
set arrow from 21,18 to 21,16 nohead
set arrow from 21,16 to 22,16 nohead
