⟩ Is there a way in excel to write a formula to mark a cell with a symbol or letter or number that is the inverse of coordinates marked. example if i mark the coordinates c/p with a "1" then excel will automatically mark its inverse p/c. and if i erase a symbol from, lets say, d/g, then excel removes a symbol from the inverse which would be g/d. i will need to mark any particular (several, many) particular cells more than once such as 2 or three times. can i do it all with the same symbol or number (or letter).reason i want to make a table of sorts where the names of badminton players are listed down vertically and in the same order horizontally. therefore b,b would have the same name such as carol, c/c might be joe, d,d might be shaun, etc. that way when, lets say carol and shaun are partners in a game and i type the symbol in the coordinates b/d, then excel will mark d/b automatically. that way i can keep track by seeing who has played with who already, not at all, or even pl