values,patterns,replacement,flags abc,^(a),bb\1bb,i ABC,^(A).*,B,i aBc,(b|d),e,i AbC,(B|D),e, aBC,^(b|c),d, 4000,\b4([1-9]\d\d|\d[1-9]\d|\d\d[1-9])\b,xyz, 4010,\b4([1-9]\d\d|\d[1-9]\d|\d\d[1-9])\b,xyz, Düsseldorf,[\p{Letter}-]+,München, Москва,[\p{L}-]+,Moscow, Köln,[a-zA-Z]ö[a-zA-Z]{2},Koln, اليوم,^\p{Arabic}+$,Today,