#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;

struct Bart{
	int I,m;
	void ini(int Mod) {m=Mod; I=(1ll<<62)/m;}
	int operator()(int x) {
		int tp=x-((__int128)x*I>>62)*m;
		while (tp>=m) tp-=m;
		while (tp<0) tp+=m;
		return tp;
	}
};

const int N=1e6+10;
int lyndon[N],lyndonr[N],n; string s;
struct hash{
	int base,mod;
	Bart getmod;
	int p[N],h[N];
	void init(int Base,int Mod,string s) {
		base=Base,mod=Mod; getmod.ini(mod); int n=s.size(); --n; p[0]=1;
		for (int i=1;i<=n;i++) p[i]=getmod(p[i-1]*base);
		for (int i=1;i<=n;i++) h[i]=getmod(h[i-1]*base+s[i]);
	}
	int gethash(int l,int r) {
//		assert(((h[r]-h[l-1]*p[r-l+1]%mod)%mod+mod)%mod==getmod(h[r]-h[l-1]*p[r-l+1]));
		return getmod(h[r]-h[l-1]*p[r-l+1]);
	}
}h[2];
bool equ(int l1,int r1,int l2,int r2) {
	return h[0].gethash(l1,r1)==h[0].gethash(l2,r2)&&h[1].gethash(l1,r1)==h[1].gethash(l2,r2);
}
int lcp(int x,int y) {
	if (s[x]!=s[y]) return 0;
	int l=0,r=n-max(x,y);
	while (l<r) {
		int mid=r-((r-l)>>1);
		if (equ(x,x+mid,y,y+mid)) l=mid;
		else r=mid-1;
	} return l+1;
}
int lcpr(int x,int y) {
	if (s[x]!=s[y]) return 0;
	int l=0,r=min(x,y)-1;
	while (l<r) {
		int mid=r-((r-l)>>1);
		if (equ(x-mid,x,y-mid,y)) l=mid;
		else r=mid-1;
	} return l+1;
}
bool cmp(int x,int y) {
	if (s[x]!=s[y]) return s[x]<s[y];
	int l=lcp(x,y);
	return s[x+l]<s[y+l];
}
void getlyn() {
	lyndon[n]=n;
	for (int i=n-1;i>=1;i--) {
		if (cmp(i+1,i)) {lyndon[i]=i;continue;}
		lyndon[i]=n;
		for (int j=lyndon[i+1]+1;j<=n;j=lyndon[j]+1) {
			if (cmp(j,i)) {lyndon[i]=j-1; break;}
		}
	} s[n+1]='z'+1,s[0]='z'+1;
	lyndonr[n]=n;
	for (int i=n-1;i>=1;i--) {
		if (!cmp(i+1,i)) {lyndonr[i]=i;continue;}
		lyndonr[i]=n;
		for (int j=lyndonr[i+1]+1;j<=n;j=lyndonr[j]+1) {
			if (!cmp(j,i)) {lyndonr[i]=j-1; break;}
		}
	} s[n+1]='a'-1,s[0]='a'-1;
}

vector<array<int,3>> ans;
void getans(int l,int r) {
	int R=r+lcp(l,r+1);
	int L=l-lcpr(l-1,r);
	int p=r-l+1;
	if (R-L+1>=p*2) ans.pb({L,R,p});
}

signed main() {
	// freopen("data.txt","r",stdin);
	// freopen("runs.txt","w",stdout);
	ios::sync_with_stdio(0);
	for (int i=1;i<=2e5;i++) s.pb('a');
	cin>>s; n=s.size(); s=" "+s; s[0]='a'-1;
	h[0].init(131,1e9+7,s);
	h[1].init(13331,998244353,s);
	s.pb('a'-1);
	getlyn();  
	for (int i=1;i<=n;i++)
		getans(i,lyndon[i]),getans(i,lyndonr[i]);
	sort(ans.begin(),ans.end());
	ans.erase(unique(ans.begin(),ans.end()),ans.end());
	cout<<ans.size()<<'\n';
	for (auto [l,r,p]:ans) cout<<l<<' '<<r<<' '<<p<<'\n';
}