shell game EASY

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Problem

You have four shells. And they have four ascending positions.
Under shell 1 there is a small ball or stone.

1 2 3 4
_ _ _ _
|A| |B| |C| |D|
^

Now that you can't see the thing under the shell, the shells are swapped around. If it begins with 12, shell A and B are swapped. If then comes 23, the shell at the second position (now A) is swapped with C. Now it is not ABCD but BCAD. At the end you will be asked, under which shell the thing is. Now that would be the 3rd shell.

It is a very comprehensive challenge of an addictive game, which is really easy to solve. Even my non-golfed source has only 8 lines.

Remember that in this case it begins every time at position 1!

And to make it harder to cheat I want the position not only at the end but also at every swap, so just make working code!!! (or you would be disqualified in my mind)

Options

exec is denied

now post-mortem time, all source codes will be revealed

Sample input:_

12
23
43
34
34
23
12
21
32
43
23
41
24
41
14

Sample output:

2
3
4
3
4
4
4
4
4
3
2
2
4
1
4

Sample input:_

12
12
41
24
12
41
24
44
13
33
21
33
11
34
21
42
34
43
21
42
13
34
14
23
13
21
14
42
43
13

Sample output:

2
1
4
2
1
4
2
2
2
2
1
1
1
1
2
4
3
4
4
2
2
2
2
3
1
2
2
4
3
1

Sample input:_

22
31
22
34
43
41
12
14
14
32
13
14
11
42
44
11
41
14
32
41
42
44
11
14
24
14
34
21
24
12
24
31
12
44
43
32
42
44
32
21
23
43
22
11
42
32
13
31
32
23
43
44
31
13
23
22
23
11
22
13

Sample output:

1
3
3
4
3
3
3
3
3
2
2
2
2
4
4
4
1
4
4
1
1
1
1
4
2
2
2
1
1
2
4
4
4
4
3
2
4
4
4
4
4
3
3
3
3
2
2
2
3
2
2
2
2
2
3
3
2
2
2
2

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