#include <bits/stdc++.h>

using i64 = long long;

void solve() {
    std::string s;
    std::cin >> s;

    int ans = 0;
    for (int l = 0, r; l < int(s.size()); l = r) {
        for (r = l; r < int(s.size()) && s[r] == s[l]; ++r);
        ans += r - l - 1;
    }

    std::cout << ans << '\n';
}

int main() {
    std::cin.tie(nullptr)->sync_with_stdio(false);

    int t;
    std::cin >> t;

    while (t--) {
        solve();
    }

    return 0;
}