function solve (input) {

    let pattern = /(\+359[-][2][-]\d{3}[-]\d{4}\b)|(\+359[' '][2][' ']\d{3}[' ']\d{4}\b)/g;

    let validPhones = [];


    while ((validPhone = pattern.exec(input)) !== null) {

      validPhones.push(validPhone[0]);

    }


    console.log(validPhones.join(', '));

  }