Thanks to 記号ゴルファーΩ, code I posted on Musical Score reduces its size to 234: _='' $<.map{|$_|_<<chomp} k=a.size/12 (0...k).map{|i|$_=' '*12 (0..11).map{|j|$_[j]=_[k*j+i]} ($-=(~/\|/);$><<"FEDCBAGFE"[$_.index('o')-3,1])if i%4==0 $><<(~/\\{3}/?"/32":~/\\{2}/?"/16":~/\\{1}/?"/8":$-?"/4":'')+' 'if i%4==1…</chomp}>