You have given the wrong letter count. It is 4, 9. It is one of ten I still need but I suspect that pachyderm refers to the name of an animal rather than a species or that the pachyderm may be a thick-skinned fruit. Try googling "pink pineapple" and let me know what you think please. I look at this quiz every year for a friend of mine. The others on which I am still trying to help are 20, 71, 83, 90 to 93 inclusive, 98 and 100. Hints rather than answers would be appreciated for those.