s = list(map(lambda x: ord(x)-97, input()))
dir = [[-1, 0], [1, 0], [0, -1]]
flg = 1
now = [0, 0]
st = set([tuple(now)])
for c in s:
  x, y = dir[c]
  now[0] += x
  now[1] += y
  st.add(tuple(now))
  if dir[c] == [-1, 0]:
    if flg:
      for i in range(3):
        if dir[i] == [-1, 0]:
          dir[i] = [1, 0]
        if dir[i] == [1, 0]:
          dir[i] = [0, 1]
        if dir[i] == [0, -1]:
          dir[i] = [0, 1]
    else:
      for i in range(3):
        if dir[i] == [-1, 0]:
          dir[i] = [1, 0]
        if dir[i] == [1, 0]:
          dir[i] = [0, -1]
        if dir[i] == [0, 1]:
          dir[i] = [-1, 0]
  elif dir[c] == [1, 0]:
    if flg:
      for i in range(3):
        if dir[i] == [1, 0]:
          dir[i] = [-1, 0]
        if dir[i] == [-1, 0]:
          dir[i] = [0, 1]
        if dir[i] == [0, -1]:
          dir[i] = [1, 0]
    else:
      for i in range(3):
        if dir[i] == [1, 0]:
          dir[i] = [-1, 0]
        if dir[i] == [-1, 0]:
          dir[i] = [0, -1]
        if dir[i] == [0, 1]:
          dir[i] = [1, 0]
  elif dir[c] == [0, -1]:
    dir[c] = [0, 1]
  elif dir[c] == [0, 1]:
    dir[c] = [0, -1]
  flg ^= 1
print(len(st))