Ionce did have...
I once did have a Fricative Trill,
and that Trill it did do that which I did so will.
I did will my Trill to fricative this,
to fricative that, both Mister and Miss.
To fricative here and to fricative there
to fricative all day with nary a care.
My Trill, did it like, to fricative for me?
Perhaps, for it's indicative, as you shall see
that my Trill, which I treated oh so very kind,
though his nature was fricative was of a trickative mind.
And though I did, true, get more than that which I asked,
I'm still unsure, yet, whether twas when my Trills tasked
that my Trill did do things, as he was so patently tamed,
or was a Trickative Frill, and inappropriately named.