Count records base on combination value from same column

Hi,

Given the data below:

Expected result :

As you can see from above, i need to find the possible conbination that the same ID_NO have, example, ID_NO 1234 have ID_TYPE 1 & 2, so i need to count it as 1. The ID_NO "4567" and "4321" both have the ID Type conbination 1 & 4, henace 1 & 4 count is 2.

I have totaly no idea how to do this, kindly assist.

Regards,

Chee Ho