Answer / sumanth toom

/**REXX**/
ADDRESS TSO
"ALLOC DD(INP1) DA('input-dataset') SHR REUS"
"EXECIO * DISKR INP1 (STEM IN1. FINIS"
MAX_OFFSET = 0
INP_OFFSET = 0
DO I = 1 TO IN1.0
PARSE UPPER VAR IN1.I INP
INP_OFFSET = POS("VALUE",INP)
IF INP_OFFSET > MAX_OFFSET THEN
DO
MAX_OFFSET = INP_OFFSET
END
END
DO I = 1 TO IN1.0
PARSE UPPER VAR IN1.I INP
Z = POS("VALUE",INP)
SAY LEFT(SUBSTR(IN1.I,1,(Z - 1)),(MAX_OFFSET - 1))||,
SUBSTR(IN1.I,Z,20)
END
"FREE DD(INP1)"

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