Dependant Lists Using Text Values Not Listed In Worksheet

I have seen in the forums where lists are created by refering to column values in other worksheets.If you create a list by entering text values can you make other lists dependant to those values and can those lists also be made up of text lists?

All the examples I have seen here use lists that exist in some other worksheet

I use lists which use text values directly and not from a worksheet. I'm wondering how to make a secondary/sub list dependant on each value selected so say if text value "A" is selected in list 1 then this only allows the list for "A" to be available for list 2 in its corresponding cell (the next one along)