> one-syllable word, Jackie aside

I defy anyone to make that a genuine single syllable word, dub dub. Agreed, it comes close but the tongue tip has to move from touching the bottom teeth on /a/ to curl up into a reflex closure on the top palate for the /l/ sound. I bet if you slow your production of this word down, you'll find a sort of two-syllable remnant masquerading as a single syllable: mebbe something like "SWAYuhl".

heh, but that's not to say Jackie caint mek it into three, or mebbe four... :)