The ABC number of a string T is the number of triples of integers (i, j, k) that satisfy all of the following conditions:

• 1 ≤ i < j < k ≤ |T| (|T| is the length of T.)
• T_i = A (T_i is the i-th character of T from the beginning.)
• T_j = B
• T_k = C

For example, when T = ABCBC, there are three triples of integers (i, j, k) that satisfy the conditions: (1, 2, 3), (1, 2, 5), (1, 4, 5). Thus, the ABC number of T is 3.

You are given a string S. Each character of S is A, B, C or ?.

Let Q be the number of occurrences of ? in S. We can make 3^Q strings by replacing each occurrence of ? in S with A, B or C. Find the sum of the ABC numbers of all these strings.

This sum can be extremely large, so print the sum modulo 10^9 + 7.

Constraints

• 3 ≤ |S| ≤ 10^5
• Each character of S is A, B, C or ?.

Input

Input is given from Standard Input in the following format:

S

Output

Print the sum of the ABC numbers of all the 3^Q strings, modulo 10^9 + 7.

Examples

Input

A??C

Output

8

Input

ABCBC

Output

3

Input

????C?????B??????A???????

Output

979596887

见题面

见题面