Переведите из питона в паскаль

a=int(
f=list(
s=0
for i in range(0, len(f),2):
st=f[i]+f[i+1]
if'a' not in st or 'b' not in st:
if st =='bb':
f[i+1]='a'
else:
f[i+1]='b'
s=s+1
print(s)
for i in range(len (f)):
print(f[i],end= '')

from itertools import product

i = open('input.txt', 'r')

o = open('output.txt', 'w+')

l = int(i.

alpha = "245"

d = []

for s in product(alpha, repeat=l):

    d.append([" ".join(

for q in d[1: ]:

    s = " ".join(q)

    if int(s.count('2')) > 2:

        continue

    o.write(" ".join(q) + '\n')

i.close()

o.close()

код к : «перевод кода с питона на паскаль»

var

n,c,i,ost,b,t,d: integer;

a,k: string;

begin

readln(n);

c: =1;

for i: =1 to n do

c: =c*3;

c: =c-1;

for i: =1 to c do

begin

k: ='';

b: =i;

t: =0;

while b> 0 do

begin

ost: =b mod 3;

if ost=0 then inc(t);

d: =(-sqr(ost)+5*ost+4)div 2;

str(d,a);

k: =a+k;

b: =b div 3;

end;

while length(k)do

begin

k: ='2'+k;

inc(t);

end;

if t< =2 then writeln(k);

end;

end.