στρ/τρ

https://wordwall.net/el/resource/2048328/%CF%83%CF%85%CE%BC%CF%86%CF%89%CE%BD%CE%B9%CE%BA%CE%B1-%CF%83%CF%85%CE%BC%CF%80%CE%BB%CE%B5%CE%B3%CE%BC%CE%B1%CF%84%CE%B1-%CF%83%CF%84-%CF%84%CF%81-%CF%83%CF%84%CF%81