/*
 *  wlst.cpp
 */

#include <iostream>
#include <cstring>
#include <fstream>
#include <time.h>

using namespace std;

int main() {
		
	time_t start, end;
	
	start = time(&start);
	
	int running = 1;
	int max = 5;
	int length = 1;
	int x1=0,x2=0,x3=0,x4=0,x5=0,x6=0,x7=0,x8=0;
	
	string chars = "abcdefghijklmnopqrstuvwxyz";
	string word;
	string blank;
	
	while(running == 1) {
		
		if(length == 1) {
			
			word = blank+chars[x1];
			cout << word << endl;
			x1 ++;
			if(x1 == chars.length()){
				x1 = 0;
					length ++; } }
		
		else if(length == 2) {

			word = blank+chars[x1]+chars[x2];
			cout << word << endl;
			x2 ++;
			if(x2 == chars.length()){
				x1 ++;
				x2 = 0;
				if(x1 == chars.length()) {
					x1 = 0;
					x2 = 0;
					length ++; } } }
		
		else if(length == 3) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3];
			cout << word << endl;
			x3 ++;
			if(x3 == chars.length()) {
				x2 ++;
				x3 = 0;
				if(x2 == chars.length()) {
					x1 ++;
					x2 = 0;
					if(x1 == chars.length()) {
						x1 = 0;
						x2 = 0;
						x3 = 0;
						length ++; } } } }
		
		else if(length == 4) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3]+chars[x4];
			cout << word << endl;
			x4 ++;
			if(x4 == chars.length()) {
				x3 ++;
				x4 = 0;
				if(x3 == chars.length()) {
					x2 ++;
					x3 = 0;
					if(x2 == chars.length()) {
						x1 ++;
						x2 = 0;
						if(x1 == chars.length()) {
							x1 = 0;
							x2 = 0;
							x3 = 0;
							x4 = 0;
							length ++; } } } } }
		
		else if(length == 5) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3]+chars[x4]+chars[x5];
			cout << word << endl;
			x5 ++;
			if(x5 == chars.length()) {
				x4 ++;
				x5 = 0;
				if(x4 == chars.length()) {
					x3 ++;
					x4 = 0;
					if(x3 == chars.length()) {
						x2 ++;
						x3 = 0;
						if(x2 == chars.length()) {
							x1 ++;
							x2 = 0;
							if(x1 == chars.length()) {
								x1 = 0;
								x2 = 0;
								x3 = 0;
								x4 = 0;
								x5 = 0;
								length ++; } } } } } }
		
		else if(length == 6) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3]+chars[x4]+chars[x5]+chars[x6];
			cout << word << endl;
			x6 ++;
			if(x6 == chars.length()) {
				x5 ++;
				x6 = 0;
				if(x5 == chars.length()) {
					x4 ++;
					x5 = 0;
					if(x4 == chars.length()) {
						x3 ++;
						x4 = 0;
						if(x3 == chars.length()) {
							x2 ++;
							x3 = 0;
							if(x2 == chars.length()) {
								x1 ++;
								x2 = 0;
								if(x1 == chars.length()) {
									x1 = 0;
									x2 = 0;
									x3 = 0;
									x4 = 0;
									x5 = 0;
									x6 = 0;
									length ++; } } } } } } }
		
		else if(length == 7) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3]+chars[x4]+chars[x5]+chars[x6]+chars[x7];
			cout << word << endl;
			x7 ++;
			if(x7 == chars.length()) {
				x6 ++;
				x7 = 0;
				if(x6 == chars.length()) {
					x5 ++;
					x6 = 0;
					if(x5 == chars.length()) {
						x4 ++;
						x5 = 0;
						if(x4 == chars.length()) {
							x3 ++;
							x4 = 0;
							if(x3 == chars.length()) {
								x2 ++;
								x3 = 0;
								if(x2 == chars.length()) {
									x1 ++;
									x2 = 0;
									if(x1 == chars.length()) {
										x1 = 0;
										x2 = 0;
										x3 = 0;
										x4 = 0;
										x5 = 0;
										x6 = 0;
										x7 = 0;
										length ++; } } } } } } } }
		
		else if(length == 8) {
			
			word = blank+chars[x1]+chars[x2]+chars[x3]+chars[x4]+chars[x5]+chars[x6]+chars[x7]+chars[x8];
			cout << word << endl;
			x8 ++;
			if(x8 == chars.length()) {
				x7 ++;
				x8 = 0;
				if(x7 == chars.length()) {
					x6 ++;
					x7 = 0;
					if(x6 == chars.length()) {
						x5 ++;
						x6 = 0;
						if(x5 == chars.length()) {
							x4 ++;
							x5 = 0;
							if(x4 == chars.length()) {
								x3 ++;
								x4 = 0;
								if(x3 == chars.length()) {
									x2 ++;
									x3 = 0;
									if(x2 == chars.length()) {
										x1 ++;
										x2 = 0;
										if(x1 == chars.length()) {
											length ++; 
											running = 0; } } } } } } } } }
		
		if(length == max+1) {
			running = 0;
			return 0; }
	}
	
	end = time(&end);
	float total_time = difftime(end, start);
	printf("\n\nTOOK C++ A TOTAL OF: %.2f SECONDS\n", total_time);
		
}