1a2g --> region, alpha_greek_map(S), listsubst(S).
    2
    3alpha_greek_map(
    4[("A","\\alpha"), ("B","\\beta"), ("C","\\gamma"), ("D","\\delta"),
    5("F","\\phi"), ("L","\\lambda"), ("M","\\mu"), ("N","\\nu"),
    6("P","\\pi"), ("S","\\sigma"), ("T","\\tau"), ("X","\\xi"),
    7("Y","\\eta"), ("Z","\\zeta"), ("a","\\alpha"), ("b","\\beta"),
    8("C","\\gamma"), ("d","\\delta"), ("f","\\phi"), ("l","\\lambda"),
    9("m","\\mu"), ("n","\\nu"), ("p","\\pi"), ("s","\\sigma"),
   10("t","\\tau"), ("x","\\xi"), ("y","\\eta"), ("z","\\zeta")])