You are given a password and you need to generate the number of steps required to convert the given password to a strong password. A password is considered strong if (a) it has at least 6 characters and at most 20 characters; (b) it contains at least one lowercase letter and one uppercase letter, and at least one digit; (c) it does not contain three repeating characters in a row. In one step you can: (1) Insert one character to password, (2) delete one character from password, or (3) replace one character of password with another character.

Ex Input:
password = ZBmrH68tg4Ev6S1gHS!zQcT5XUX1XmL6t7h6O5

Ex Output:
18


Ex Input:
password = ENMG3LNIpYaUaG.6CQwna8!IF8xCtP8!MdbeXzPOpRBvFNv22

Ex Output:
29


Ex Input:
password = CX4WlxYN9MiZ06YzMhCHcyGSfozGXzi2N7w01dPviG93H3

Ex Output:

26