# pl_urchin: from pixellab_src/pl_urchin/base.png (pixellab_library.py extract)
# pivot at (29, 58)
# aura at (31, 44)
# head_top at (31, 32) (from part/probe)
# back at (31, 38) (from part/probe)
# tail at (50, 50)
...................cc...................
..............c...oaao...c..............
.............cao..oyyo..oac.............
.............oyo..o11o..oyo.............
........ac...o11o.o12o.o11o...ca........
........cy2o.o212o3^23o212o.o2yc........
........o211oo222122221222oo112o........
....ac...o22233111211211133222o...ca....
....cy2o.o22113111233311131122o.o2yc....
....o211oo33212111111111121233oo112o....
.....o223123o21133333333112o321322o.....
.....o3311122133221B11223312211133o.....
.acoooo32122332111111111223322133ooooca.
.cy1123222232111111111111112322223211yc.
..o322o32232111111111111111123223o223o..
...o3o332321111111111111111112323333o...
..ooo32233111ooo11111111ooo11123223ooo..
ba1113223211owooo11A111owooo1113223111ab
co322o2o211oowwoo111111owwooo11332o223oc
..oo332o211oo3o3o111111o3o3oo112o333oo..
...oo233211132o2311111132o231112o32oo...
..o122o32111122211111111222111123o221o..
.c2223o3211111111c1111c1111111123o3222c.
.ccoooo33211111111cccc11111111233oooocT.
....o33o332211111111111111112233o33o....
....o23o333322111111111111223333o32o....
...c233oo3333322222222222233333oo332c...
...ccoo3ooo333333333333333333ooo3oocc...
......o3obcoo33333333333333oocbo3o......
.......ooacooccoccooooccocboocaoo.......
.........oo.oacoaco..ocaocao.oo.........
.............oo.oP....oo.oo.............