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**Rule 6: This question belongs to Commerce category**

We will provide the answer accordingly, keeping in mind that this question falls under the Commerce category.

Now let's analyze the word "CAMBRIDGE" to find the desired pairs of letters.

**Step 1: Identify the Letters in the Word**

The word "CAMBRIDGE" consists of the following letters: C, A, M, B, R, I, D, G, and E.

**Step 2: Determine the Number of Letters Between Each Pair**

We will calculate the number of letters between each pair of letters and check if it matches the position of the corresponding letter in the English alphabet.

- C and A: There is one letter between C and A (B), which matches their positions in the English alphabet.
- C and M: There are four letters between C and M (A, B, R, and I), which does not match their positions in the English alphabet.
- C and B: There are two letters between C and B (A and M), which matches their positions in the English alphabet.
- C and R: There are three letters between C and R (A, M, and B), which does not match their positions in the English alphabet.
- C and I: There are five letters between C and I (A, M, B, R, and D), which does not match their positions in the English alphabet.
- C and D: There are six letters between C and D (A, M, B, R, I, and G), which does not match their positions in the English alphabet.
- C and G: There are seven letters between C and G (A, M, B, R, I, D, and E), which does not match their positions in the English alphabet.
- A and M: There are three letters between A and M (B, R, and I), which does not match their positions in the English alphabet.
- A and B: There is one letter between A and B (M), which matches their positions in the English alphabet.
- A and R: There are two letters between A and R (M and B), which matches their positions in the English alphabet.
- A and I: There are four letters between A and I (M, B, R, and D