def get_pins(observed):
    from itertools import permutations
    nums = {
    "1" : "124",
    "2" : "2135",
    "3" : "326",
    "4" : "4157",
    "5" : "52468",
    "6" : "6359" ,
    "7" : "748",
    "8" : "85790",
    "9" : "968",
    "0" : "8"
    }
    new_list = ""
    for i in observed:
        new_list += (nums.get(i))
    permut_list = []
    new_list = list(permutations(new_list,len(observed)))
    final_list = []
    for i in new_list:
        final_list.append(''.join(i))
    final_list = set(final_list)
    final_list2 = []
    for i in final_list:
        final_list2.append(i)
    return final_list2