# base_N_by_L.py

# base_N_by_L.py

def base2index(combo):
    i = combo[-1]
    c = combo[:-1]
    for k,v in enumerate(c[::-1]):
        i += int(v * base ** (k + 1))
    return i

def index2base(n):
    results = []
    for z in '.' * baselength:
        results.append(int(n % base))
        n //= base
    return list(reversed(results))

base = 12
baselength = 12
i = base2index([base-1 for i in '.' * baselength])
print i
while 1:
    aaa = index2base(i)
    bbb = base2index(aaa)
    print 'from '+str(bbb).zfill(16), 'to', aaa
    print '.....'+str(i).zfill(16)
    print
    i -= 1
0