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.
--------
Question: password = fBLNkTmd8mFSKcsAjfb!!xvw8u!JLClCp4

Answer: 14


Question: password = ewc7GWgy80Y!t3FdadOBB.sX9a8mpwBikBf38cJso

Answer: 21


Question: password = ZYcuggGW!uPsQ0Q2b0AE0t.2

Answer:
4