IFS= declare -A a eval c=\$\'\\{,1}{0..7}{0..7}\'';eval a{[\${b,b\ ,c-,a+}],}=\$b;b=$c' while read -n1 c;do s[l]=${a[${s[l]}$c]};l=${c:+$l+1};done echo "${s[*]}"
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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