Enter a species  (e.g. Al, Fe): Si
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: SW_ZhangXieHu_2014OptimizedSW2_Si__MO_475612090600_005
Enter hexagonal lattice constants 'a' and 'c' (m): 3.532488392272332e-10, 3.136923752916795e-10