1: Y|y:X|x
    2: abbot:abbess
    3: alumnus:alumna
    4: ambassador:ambassadress
    5: boar:sow
    6: buck:doe
    7: bull:cow
    8: cob:pen
    9: colt:filly
   10: curator:curatrix
   11: dog:bitch|vixen
   12: duke:duchess
   13: drake:duck
   14: effeminate|womanish:mannish
   15: gander:goose
   16: gentleman:lady|gentlewoman
   17: jack:jenny
   18: lad:lass
   19: manly:womanly
   20: marquis:marchioness[|e]|marquise
   21: monk:nun
   22: [O|o]edipus complex:[E|e]lectra[| complex]
   23: prince:princess
   24: ram:ewe
   25: rooster|cock:hen
   26: stallion:mare