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tret

Old variant of treat I believe.

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Tree

tres

Oxford Dictionaries: tres

rest

sett

Oxford Dictionaries: sett
Merriam-Webster:sett

tits

You were the first to think of those small birds. :smile:
“Tit” might derive from old Swedish, there are speices of a small bird called “tita” /tiːta/ after its call/song at danger. E.g. Entita, Talltita, Bergtita.
/OT

titi
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tait

http://www.finedictionary.com/Tait.html

twat

wast

Oxford Dictionaries: wast
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tsar

rasa

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abra

alar:bird:

para

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Oxford Dictionaries: para

paca

pacu

Fine Dictionary: pacu
Oxford Dictionaries: pacu

pacs

pics

(plural of pic)
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phis