Περίοδος και προγιστερονη

Question

&Kappa;&alpha;&lambda;&eta;&sigma;&pi;&epsilon;&rho;&alpha; έ&chi;&omega; &theta;έ&mu;&alpha; &mu;&epsilon; &tau;&eta;&nu; &pi;&epsilon;&rho;ί&omicron;&delta;&omicron; &mu;&omicron;&upsilon; &pi;&omicron;&lambda;&upsilon;&kappa;&iota;&sigma;&tau;&eta;&kappa;&epsilon;&sigmaf; &tau;&epsilon;&lambda;&epsilon;&upsilon;&tau;&alpha;ί&alpha; &mu;&omicron;&upsilon; έ&rho;&chi;&epsilon;&tau;&epsilon; &kappa;ά&theta;&epsilon; 15 &mu;έ&rho;&epsilon;&sigmaf; &eta; &gamma;&iota;&alpha;&tau;&rho;ό&sigmaf; &mu;&omicron;&upsilon; &epsilon;ί&pi;&epsilon; &nu;&alpha; &pi;ά&rho;&omega; &pi;&rho;&omicron;&gamma;&iota;&alpha;&tau;&epsilon;&rho;&omicron;&nu;&eta; &tau;&eta;&nu; 16&eta; &tau;&omicron;&upsilon; &kappa;ύ&kappa;&lambda;&omicron;&upsilon; &alpha;&lambda;&lambda;ά &delta;&epsilon;&nu; &pi;&rho;ό&lambda;&alpha;&beta;&alpha; &mu;&omicron;&upsilon; ή&rho;&theta;&alpha;&nu; &sigma;&tau;&alpha;&gamma;ό&nu;&epsilon;&sigmaf; &kappa;ό&kappa;&kappa;&iota;&nu;&epsilon;&sigmaf; &mu;&pi;&omicron;&rho;&omega; &nu;&alpha; &tau;&eta;&nu; &pi;ά&rho;&omega; &alpha;&kappa;ό&mu;&alpha; &kappa;&alpha;&iota; &tau;ώ&rho;&alpha; &eta; &theta;&alpha; &kappa;ά&nu;&omega; &zeta;&eta;&mu;&iota;ά ?&gamma;&iota;&alpha; &nu;&alpha; &tau;&eta;&nu; &kappa;&alpha;&theta;&upsilon;&sigma;&tau;&epsilon;&rho;ή&sigma;&omega; ..&epsilon;&upsilon;&chi;&alpha;&rho;&iota;&sigma;&tau;&omega;