trying to match a string

[arnimavidyarthy at gmail.com]

Hi,

Hi,

I am taking a string as an input from the user and it should only
contain the chars:L , M or R

I tried the folllowing in kodos but they are still not perfect:

[^A-K,^N-Q,^S-Z,^0-9]
[L][M][R]
[LRM]?L?[LRM]? etc but they do not exactly meet what I need.

For eg: LRLRLRLRLM is ok but LRLRLRNL is not as it has 'N' .like that.

regards,
SZ

The string may or may not have all the three chars.