#include <bits/stdc++.h>
#define ll long long
#define INF 1000000005
#define MOD 1000000007
#define EPS 1e-10
#define rep(i,n) for(int i=0;i<(int)(n);++i)
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;--i)
#define srep(i,s,t) for(int i=(int)(s);i<(int)(t);++i)
#define each(a,b) for(auto& (a): (b))
#define all(v) (v).begin(),(v).end()
#define len(v) (int)(v).size()
#define zip(v) sort(all(v)),v.erase(unique(all(v)),v.end())
#define cmx(x,y) x=max(x,y)
#define cmn(x,y) x=min(x,y)
#define fi first
#define se second
#define pb push_back
#define show(x) cout<<#x<<" = "<<(x)<<endl
#define spair(p) cout<<#p<<": "<<p.fi<<" "<<p.se<<endl
#define sar(a,n) cout<<#a<<":";rep(pachico,n)cout<<" "<<a[pachico];cout<<endl
#define svec(v) cout<<#v<<":";rep(pachico,v.size())cout<<" "<<v[pachico];cout<<endl
#define svecp(v) cout<<#v<<":";each(pachico,v)cout<<" {"<<pachico.first<<":"<<pachico.second<<"}";cout<<endl
#define sset(s) cout<<#s<<":";each(pachico,s)cout<<" "<<pachico;cout<<endl
#define smap(m) cout<<#m<<":";each(pachico,m)cout<<" {"<<pachico.first<<":"<<pachico.second<<"}";cout<<endl

using namespace std;

typedef pair<int,int> P;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<double> vd;
typedef vector<P> vp;
typedef vector<string> vs;

const int MAX_N = 100005;

template<typename CandidateType, typename ValueType> class segtree
{
private:
    using CT = CandidateType;
    using VT = ValueType;
    using pcc = pair<CT, CT>;
    using pci = pair<CT, int>;
    //座標, インデックス
    vector<pair<pcc, int> > sorted;
    //x座標
    vector<CT> xs;
    //y座標, インデックス
    vector<vector<pci> > ys;
    int n, sz;
    VT query(int lxid, int rxid, CT ly, CT ry, int k, int l, int r){
        if(r <= lxid || rxid <= l) return 0;
        if(lxid <= l && r <= rxid){
            int lyid = lower_bound(all(ys[k]),pci(ly,-1)) - ys[k].begin();
            int ryid = upper_bound(all(ys[k]),pci(ry,-1)) - ys[k].begin();
            return ryid - lyid;
        }else{
            return query(lxid,rxid,ly,ry,2*k+1,l,(l+r)/2) + query(lxid,rxid,ly,ry,2*k+2,(l+r)/2,r);
        }
    }
public:
    segtree(vector<pcc>& cand){
        sz = (int)cand.size();
        n = 1;
        while(n < sz){
            n *= 2;
        }
        sorted.resize(sz);
        rep(i,sz){
            sorted[i] = make_pair(cand[i], i);
        }
        sort(sorted.begin(), sorted.end());
        xs.resize(sz), ys.resize(2*n-1);
        rep(i,sz){
            xs[i] = (sorted[i].first).first;
            ys[i+n-1] = {pci((sorted[i].first).second, sorted[i].second)};
        }
        for(int i=n-2; i>=0; i--){
            ys[i].resize((int)ys[2*i+1].size() + (int)ys[2*i+2].size());
            merge(all(ys[2*i+1]),all(ys[2*i+2]),ys[i].begin(),[&](pci& a, pci& b){
                return a.first < b.first;
            });
        }
    }
    //[lx,rx)×[ly,ry)の長方形領域に含まれる値の和に答える
    VT query(CT lx, CT ly, CT rx, CT ry){
        int lxid = lower_bound(all(xs),lx) - xs.begin();
        int rxid = upper_bound(all(xs),rx-1) - xs.begin();
        if(lxid >= rxid) return 0;
        return query(lxid,rxid,ly,ry,0,0,n);
    }
};

typedef pair<string, int>psi;

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n, q;
    cin >> n >> q;
    vector<psi> s(n),t(n);
    rep(i,n){
        string x;
        cin >> x;
        s[i] = psi(x,i);
        reverse(all(x));
        t[i] = psi(x,i);
    }
    sort(all(s)), sort(all(t));
    vp vec(n);
    rep(i,n){
        vec[s[i].se].fi = i, vec[t[i].se].se = i;
    }
    segtree<int,int> sg(vec);
    rep(i,q){
        string p, q;
        cin >> p >> q;
        reverse(all(q));
        int id1 = lower_bound(all(s),psi(p,-1)) - s.begin();
        p.back()++;
        int id2 = upper_bound(all(s),psi(p,-1)) - s.begin();
        int id3 = lower_bound(all(t),psi(q,-1)) - t.begin();
        q.back()++;
        int id4 = upper_bound(all(t),psi(q,-1)) - t.begin();
        cout << sg.query(id1, id3, id2, id4) << "\n";
    }
    return 0;
}



Measured memory_bytes: 45076