Java Regex with OR condition to Split String

I need to build a regex to Split my string starting with a number or LM(exact match as it is a special case)

For example - 
Input : 1LM355PL6R5L8
Output : [1,LM,3,5,5PL,6R,5L,8]

Input : 349AB8LM7Y4II
Output : [3,4,9AB,8,LM,7Y,4II]

For numbers, i’ve build this regex (?<!^)(?=\\d) and it seems to be working fine.
Now i’m confused how to add this exact match of ‘LM’. It can be at any position

List<String> diff = Arrays.asList(inputString.split("(?<!^)(?=\\d)"));

Actual Output with above code

Output : [1LM,3,5,5PL,6R,5L,8]
    
Output : [3,4,9AB,8LM,7Y,4II]

I’m trying to put an OR condition in my regex and make strict match for LM but not getting correct results from it.

List<String> diff = Arrays.asList(inputString.split("(?<!^)(?=\\d)|('LM')"));

>Solution :

The or part with | should be put inside the lookahead and there should not be quotes around LM.

inputString.split("(?<!^)(?=\\d|LM)")