Koch Island by ySas

@u=(u,wwwu,uvwv,vwvu);@v=(wvuv,vuv,wwu,wu);y!uvw!/\\ !,print"$_
"for eval'map{$b+++s/./$&->[$b%4]|$"x4/ge;$_}map{($_)x4}'x<>.'uv,vu'

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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