Upgrade of Java Quiz: Spanish stem changing verbs in the present tense

alomorzar-contar-costar-encontrar-jugar-
mostrar- recordar-sonar-volar
Devolver-poder-resolver-volver-morir-
dormir
Cerrar-comenzar-confesar-empezar-
gobernar-pensar-
Defender-entender-perder-querer-preferir
referir-sentir-
Pedir-repetir-servir