"Spin4 example"
"author : afmika"
"Fibonacci sequence given an input number (stdin)"

[,n](+00>)y*[y]*[x]*[>][x](-00<)(+0>)xxx[.n][<][.c][>][.n][xy]xy
{[xy]+x[xy]xy[<][.c][>][.n][>][>][yx]y-[yx]yx[>][>][>]?y}