#Snails, 122
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..~|!(.2+~).!~!{{t.l=.r=.}+!{t.!.!~!{{r!~u~`+(d!~!.r~)+d~,.r.=.(l!~u~)+(d!~l~)+d~,.l.},l=(.!.)(r!~u~)+(d!~!.r~)+d~,.r.!.
Will post pictures later.
feersum
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