if current char is ' c ▁ & & ▁ last ▁ char ▁ in ▁ output ▁ ▁ is ▁ ' a ' so delete both
elif i >= 0 and string [ j ] == ' c ' and string [ i ] == ' a ' : NEW_LINE INDENT i -= 1 NEW_LINE j += 1 NEW_LINE DEDENT