case "$( date +'year %Y month %m day %d' )" in
  ('year 2014 month 01 day 01') echo '2014-01-02' ;;
  ('year 2014 month 01 day 02') echo '2014-01-03' ;;
  ('year 2014 month 01 day 03') echo '2014-01-04' ;;
# 1) write a generator one-liner to produce lines like above
# 2) run it until you get bored
# 3) paste it output here
# 4) if someone beats your answer repeat from step 2)
  (*) date -d 'now + 1 days' +'%Y-%m-%d' ;;
esac