validLetters property
Implementation
static List<String> validLetters = [
// GREEK VARIATION
"Α",
"A",
// GREEK VARIATION
"Β",
"B",
// GREEK VARIATION
"Ε",
"E",
// GREEK VARIATION
"Ζ",
"Z",
// GREEK VARIATION
"Η",
"H",
// GREEK VARIATION
"Ι",
"I",
// GREEK VARIATION
"Κ",
"K",
// GREEK VARIATION
"Μ",
"M",
// GREEK VARIATION
"Ν",
"N",
// GREEK VARIATION
"Ο",
"O",
// GREEK VARIATION
"Ρ",
"P",
// GREEK VARIATION
"Τ",
"T",
// GREEK VARIATION
"Υ",
"Y",
// GREEK VARIATION
"Χ",
"X"
];