My original data is actually in table form. So my prference would be to work from the original table data, and rutun a table with only unique values.
Starting:
color_1 color_2 color_3
________ ________ ________
'red' 'blue' 'green'
'red' 'orange' 'yellow'
'orange' 'orange' 'red'
Reult
color_1 color_2 color_3
_______ ________ ________
'red' 'blue' 'green'
'orange' 'orange' 'yellow'
'red'