Multi-file renaming puzzle

Hi all. I'm trying to rename a small group of files using wildcards, but I don't seem to be having much success at getting the results I need. The group of files are named:

kb67x l33brm prc base 001.kl1
kb67x l33brm prc base 002.kl1
kb67x l33brm prc base 003.kl1

They are the only files in their directory with the combination "l33brm". And I would like them to end up as:

kb67x lot33 prc base 001.kl1
kb67x lot33 prc base 002.kl1
kb67x lot33 prc base 003.kl1

I tried "ren *l33brm*...

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