tam = int(input("insert password lenght"))
if tam ==1:
    for i in range(48,123):
        if (i>=48 and i<=57) or (i>=65 and i<=90) or (i>=97 and i<=122): 
            print(str(chr(i)))
    
if tam ==2:
    for i in range(48,123):
        if (i>=48 and i<=57) or (i>=65 and i<=90) or (i>=97 and i<=122): 
            for j in range(48,123):
                if (j>=48 and j<=57) or (j>=65 and j<=90) or (j>=97 and j<=122): 
                    print(chr(i)+chr(j))
                    
if tam ==3:
    for i in range(48,123):
        if (i>=48 and i<=57) or (i>=65 and i<=90) or (i>=97 and i<=122): 
            for j in range(48,123):
                if (j>=48 and j<=57) or (j>=65 and j<=90) or (j>=97 and j<=122):
                    for k in range(48,123):
                        if (k>=48 and k<=57) or (k>=65 and k<=90) or (k>=97 and k<=122):
                            print(chr(i)+chr(j)+chr(k))
                            
if tam ==4:
    for i in range(48,123):
        if (i>=48 and i<=57) or (i>=65 and i<=90) or (i>=97 and i<=122): 
            for j in range(48,123):
                if (j>=48 and j<=57) or (j>=65 and j<=90) or (j>=97 and j<=122):
                    for k in range(48,123):
                        if (k>=48 and k<=57) or (k>=65 and k<=90) or (k>=97 and k<=122):
                            for l in range(48,123):
                                if (l>=48 and l<=57) or (l>=65 and l<=90) or (l>=97 and l<=122):
                                    print(chr(i)+chr(j)+chr(k)+chr(l))

your_list = 'abcdefghijklmnopqrstuvwxyz'
complete_list = []
for current in xrange(10):
    a = [i for i in your_list]
    for y in xrange(current):
        a = [x+i for i in your_list for x in a]
    complete_list = complete_list+a