Remove duplicates inside the cells (with criteria)

Hello,

I have a worsheet "Is" which has a column D. Column D contains of words followed by their grammatical identities in "{}". Seperator for the words is ";".
Now there are some words which are available multiple times but their grammtical identities inside "{}" differ. For example: " franc {adv.}; franc {m.}; franc {xy}; franc {??}". Now i have the word "franc" multiple times. I want to delete all those duplicates which dont have the grammatical identity "{m.}" or "{f.}". So the task is:

a) find duplicates inside the cells of Column D/worksheet "is"
b) delete all duplicates and leave only those which are followed by "{m.}" or "{f.}" . For example ( wordxy {adv.}; wordyy {adj.}; wordxy {m.}; wordxy {adj.} ==> wordyy {adj.}; wordxy {m.})
c) if there are duplicates but non of them has the grammatical identity "{m.}" or "{f.}" then delete the duplicates and leave which ever has the first position. For example ( word25 {xy.}; word1 {adv.}; word2 {n.} ==> word25 {xy}; {word1 {adv.})

I am attaching example wordlist along this thread and hope some one can help me clean this wordlist.