I remember some conversation about this a few weeks back. Marketed at 122°, but the first overbanked is actually 126°, the 2nd (first island turn) isn't overbanked at all at 90°, the third (second island turn) is the 122° one, and the last turn I completely forget.
Something along those lines.
(Note: If you ask me, yes, you go upside down. I don't, however, call them "inversions". Don't ask me why either -- I can't explain it.)
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