// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?m)(?P<ipc_cpc_fi>\b(?P<section>[A-HY])(?(section)(?P<class>\d{2})?)(?(class)(?P<subclass>[A-Z])?)(?(subclass) *(?P<group>\d{1,})?)(?(group)(?:/(?P<subgroup>\d{1,}))?)(?(subgroup) *(?P<subsubgroup>[A-Z]?))\b)").unwrap();
let string = "
FI F15D 1/08 A 3H091 for releasing the airflow widely (combined with the Coanda effect) especially controlling the flow direction from nozzles 気流を広角に放出させるためのもの〔コアンダ効果を併用するもの〕特にノズルからの流れ方向制御
FI F24F 13/08 C 3L081 Fluid devices (control members using Coanda effect) 流体素子，例．コアンダ効果を用いる制御部材
CPC B01F5/0293 {the jet injector being of coanda type, i.e. having a surface to attract the jet for adjusting its direction} ｛ジェットインジェクターがコアンダ型であるもの，すなわちその方向に噴射流を引き付ける面をもつもの｝
CPC B07B7/0865 {using the coanda effect of the moving gas stream} ｛気体流れのコアンダ効果を用いるもの｝
CPC B08B2205/005 Using the coanda effect of the gas flow/stream ガス流／ガスの流れのコアンダ効果を使用するもの
CPC B63H2011/002 {using Coanda effect, i.e. the tendency of fluid jets to be attracted to nearby surfaces}
CPC B65H29/248 {with coanda effect (separating from a stack B65H3/14)} ｛コアンダ効果をもつもの（積層物からの分離Ｂ６５Ｈ３／１４）｝
CPC F05D2270/173 by the Coanda effect コアンダ効果によるもの
CPC F15C1/008 {Other applications, e.g. for air conditioning, medical applications, other than in respirators, derricks for underwater separation of materials by coanda effect, weapons} ｛他の適用，例．空調，医療への適用，呼吸マスク以外のもの，コアンダ効果による物質の水面下分離用のやぐら，武器｝
CPC F15C1/08 Boundary-layer devices, e.g. wall-attachment amplifiers {coanda effect (fluid oscillators of pulse generators F15B21/12)} 境界層装置，例．壁面付着形素子，｛コアンダ効果（パルス発生機の流体発振機Ｆ１５Ｂ２１／１２）｝
CPC F24F2221/28 using the Coanda effect コアンダ効果を用いるもの
CPC F26B13/104 {supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles} ｛流動体噴射のみにより支持されるもの；浮動乾燥機のための流動体吹き付け装置，例．コアンダノズル｝
CPC Y10S239/07 Coanda コアンダ
CPC Y10T137/206 Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system] ";
let substitution = "\\g<section>\\g<class>\\g<group>\\g<subgroup>/\\g<subgroup>\\g<subsubgroup>";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/