START $i
MAY 
JUNE 
JULY
END $j
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here $i and $j are variables which change. I am trying to search (with a one liner) between the pattern1 and pattern2 and prefix a variable.

perl -ne ' print if /START $i/ .. /END $j/' file.txt
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EXPECTED RESULT:

START $i
$i $j MAY 
$i $j  JUNE 
$i $j  JULY
END $j
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The $i and $j values change with variable