Please help coding

[aankrose]

If given input in INPUT=9 , I would like to get below output

Output:
123456789
.1234567
..12345
...123
....1
...123
..12345
.1234567
123456789

S = 9
t=[]
for i in range(1,S+1):
    t.append(i)
for i1 in range(0,S):
    print(''.join(str(e) for e in t))
    for i in range(S-1,0,-1):
        t[i]=t[i-1]
    t[i1]='.'
    for i in range(S - 1, 0, -1):
        t[i] = t[i - 1]
    t[i1] = '.'

Output:
My output 
123456789
..1234567
....12345
......123
........1
.........
.........
.........
.........

please help , i been breaking my head from morning