#20022 and #20023 are listed twice
Here:
Previously Collected
>>15840547 #20030, >>15841328 #20031
>>15838961 #20027, >>15839031 #20028, >>15840891 #20029
>>15835807 #20024, >>15836610 #20025, >>15834894 #20026
>>15833357 #20021, >>15834115 #20022, >>15834894 #20023
>>15830997 #20018, >>15831833 #20019, >>15831872 #20020
>>15828769 #20015, >>15829484 #20016, >>15830237 #20017