Abbreviating Principle – Simplified

I have a few questions about the Abbreviating Principle in
Simplified.
Regarding the groups of words in families, from what I have
read on the blog and in the books, I think there are 15 family groups, but I am
not sure if I’ve missed any:
  1. -cate/-quate:
    indic(ate), loc(ate), duplic(ate), educ(ate), adeq(uate).
  2. -cide/-side:
    deci(de), besi(de), outsi(de),.
  3. -gate:
    deleg(ate), navig(ate).
  4. -iety:
    vari(ety), soci(ety).
  5. -iferous:
    vocif(erous), conif(erous).
  6. -itis:
    tonsili(tis), arthri(tis).
  7. -iverous:
    carniv(erous).
  8. -ntic:
    frant(ic), romant(ic).
  9. -ology:
    apol(ogy), geol(ogy).
  10. -quent:
    eloq(uent), freq(uent).
  11. -quire:
    acqui(re), requi(re).
  12. -titude:
    attit(ude), gratit(ude), aptit(ude).
  13. -titute:
    constit(ute), substit(ute).
  14. -tribute:
    trib(ute), distrib(ute).
  15. -use:
    excu(se), refu(se), accu(se), abu(se), confu(se).
Is this right?
Also, the dictionary shows the same form for “eloquence” as
it does for “eloquent”
(e l o k), and for “consequence” and ”consequent” (k s e k);
would these be listed together with -quent like this: -quent/-quence, or are
these just derivatives?
Next question: I have been trying to find words not in
families in the dictionary, other than those listed in the books. So far I have
only found “melancholy” (m e l a n) and its derivatives; are there any more?
Many thanks.

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