awk:

  echo '1 "one"\n1 "two"\n1 "three"\n1 "one"\n1 "four"\n1 "two"' | awk '{ counters[$2] += $1 } END { for (id in counters) { print counters[id], id } }'

  2 "two"
  1 "four"
  1 "three"
  2 "one"