s/$/<++,<<<<<<<<,<<<<<<<<<-,--,<-,<<,<+,++ /
:
s/-/+++++++++/
s/\(.\)+\|\(.\)</\1(abcdefghija09876543210)\2/
s/\(.\)(.*\(.\)\1.*)/\2/
s/\(.\w\),/\1 \1/
t
s/[ij]. \|.[90] //g
s/ $//