Actually, "spelt" is perfectly acceptable... "spelt"* the British past tense of "to spell", whereas the American past tense of "to spell" is "spelled"
Same with "learnt" vs. "learned"
* = spelt is also defined as "a hardy wheat grown in europe for livestock feed"
EDIT:Ermm, of course, "splet" isn't really a word at all ... more like a sound (see Dave's
(disturbing) note below
)