wpt 1 to 7
 gulp 0 1 2
 
wpt 7 to 13
 gulp 3 4 5
 
wpt 13 spiral
 gulp 6 7 8 9
 
wpt 13 to 20
 gulp 10 11 12
 
wpt 20 to 26
 gulp 13 14 15
 
wpt 26 spiral
 gulp 16 17 18 19