// #pragma GCC optimize ("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target ("avx,avx2,fma")
#include <bits/stdc++.h>

using std::cin, std::cout, std::cerr;
using ll = long long;

struct Point {
    int x, y, z;
    Point operator +(Point p) {
        return {x + p.x, y + p.y, z + p.z};
    }
    Point operator -(Point p) {
        return {x - p.x, y - p.y, z - p.z};
    }
    bool operator <(const Point &rhs) const {
        return std::tuple(x, y, z) < std::tuple(rhs.x, rhs.y, rhs.z);
    }
};

int main() {
    std::ios::sync_with_stdio(false);
    Point p[3] = {
        {1, 0, 0},
        {0, 1, 0},
        {0, 0, 1},
    };
    std::set<Point> set = {{1, 1, 1}};
    std::string s; cin >> s;
    for(char c : s) {
        int i = c - 'a';
        p[i] = p[(i + 1) % 3] + p[(i + 2) % 3] - p[i];
        set.insert(p[0] + p[1] + p[2]);
    }
    cout << set.size() << '\n';
}