name        occupation      grade
ishaan      doctor          best
sinha       engineer        worst
palak       sales           good
nishant     commissioner    best
ishaan      doctor          good
palak       sales           okey

name        grade       occupation
ishaan      best        doctor
sinha       worst       engineer
palak       good        sales
nishant     best        commissioner
ishaan      good        doctor
palak       okey        sales