&CONTROL
    recover = .true.,
    calculation = 'vc-relax',
    verbosity='high'
    prefix = 'geom',
    tstress = .true.,
  outdir = './tmp/',
/
&SYSTEM
    A = 4.3596,
    ecutwfc = 75.000000,
    ibrav = 2,
    nat = 2,
    ntyp = 2,
/
&ELECTRONS
/
&IONS
/
&CELL
/
ATOMIC_SPECIES
 Si 28.085 Si.pz-vbc.UPF
 C 12.011 C.pz-vbc.UPF
ATOMIC_POSITIONS
 Si 0.000000  0.000000  0.000000
 C 0.250000  0.250000  0.250000
K_POINTS automatic
  10 10 10   1 1 1