Search first two letter and replace with particular word in table

hi,
i have a table with data
in range c10:c100
i want to replace data with LF To start with LF
For Example
"LF SARFARAZ NK" Replace with "LF"
"LF GULLU G" replace with "LF"
"LF H FAYYAZ G" replace with "LF"
"LF HAROON" replace with "LF"

any Word start with "LF " should replace with "LF"

Thanks