Q,W,E,R,T,YZU,I,O,P,A,S,D,F are set of names of 14 members and get the combinations of 7 members out of 14 without repeating

def get_name(n, a):
  if n == 0:
    return [""]
  else:
    if n in [1,2]:
      return a
    elif n == 3:
      return [a[i] + a[i+1] + a[i+2] for i in range(len(a) - 2)]
    elif n == 4:
      return [a[i] + a[i+1] + a[i+2] + a[i+3] for i in range(len(a) - 3)]
    elif n == 5:
      return [a[i] + a[i+1] + a[i+2] + a[i+3] + a[i+4] for i in range(len(a) - 4)]
    elif n == 6:
      return [a[i] + a[i+1] + a[i+2] + a[i+3] + a[i+4] + a[i+5] for i in range(len(a) - 5)]