public function testStep1a()
{
$this->assertEquals('caress', Stemmer::step1a('caresses'));
$this->assertEquals('poni', Stemmer::step1a('ponies'));
$this->assertEquals('ti', Stemmer::step1a('ties'));
$this->assertEquals('caress', Stemmer::step1a('caress'));
$this->assertEquals('cat', Stemmer::step1a('cats'));
}