Skew 4-noid

skew 4noid toneck 001
skew 4noid toneck
skew 4noid grow 001
skew 4noid grow
skew 4noid st
skew 4noid st
skew 4noid sw
skew 4noid sw

see Symmetric 4-noid for math detail.

Skew_4noid.pdf