LUP
In the above question, the pattern is,
1st letter
$latex P\xrightarrow{\text{-1}}O\xrightarrow{\text{-1}} N \xrightarrow{\text{-1}} M \xrightarrow{\text{-1}} \textcircled{L}$
2nd letter
$latex M\xrightarrow{\text{+2}}O\xrightarrow{\text{+2}} Q \xrightarrow{\text{+2}} S\xrightarrow{\text{+2}} \textcircled{U} $
3rd letterr
$latex T\xrightarrow{\text{-1}} S\xrightarrow{\text{-1}}R\xrightarrow{\text{-1}} Q\xrightarrow{\text{-1}} \textcircled{P} $