Enter a species  (e.g. Al, Fe): Na
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Na__MO_707981543254_004
Enter hexagonal lattice constants 'a' and 'c' (m): 3.930679018046066e-10, 6.456688796565875e-10