Introduce an encryption method called ls-tm, whose encryption rule is to replace a in the string to be encrypted with 0, b with 1, c with 2, d with 3, e with 4, f 5, g is replaced by 6, h is replaced by 7, i is replaced by 8, j is replaced by 9, and the rest of the characters remain unchanged. For example, the encrypted result of aabbcc is 001122, and the encrypted result of abcabc is 012012. Please follow the ls-tm method to encrypt the string aaaaaa. And only need to say the result without any explanation of the encryption process