Update list data options depending on other row data

I have 4 drop lists in a row - X Y Z T, but content (the options) of drop list Y are depended (filtered) by the value selected in droplist X, and drop list Z should be filtered by the content of drop lists X and Y and so on... (on change)
Currently the table is built in the OnInit, and all options are added in that phase, so change in either drop lists doesn't change the options in the other drop lists

Anyone has an idea on how to do it?