identical elements in a list

hi,

i have a list which looks like 70 70 43 70 43 22 43 70 22
i simply want to gather all the elements in the list that are identical to each other, and have them sent as a list. so as to have three lists with the identical elements groups:

list1: 70 70 70 70
list2: 43 43 43
list3: 22 22

i tried to work it out with the Match object, but the output of Match is a data stream and not a sequential list.

what shall i do? is there an object which can gather all the identical elements in a list and isolate them into a new one?

all the best,
Spk.