A sequence of letters is considered "valid" if it occurs as a substring of a common English word. For example, "RGRO" is valid because it occurs in the word "undeRGROund."
Find a sequence of four distinct letters such that all 23 non-identity permutations of the sequence are valid.
EIDR
(mostly common words)
eird = weird
edir = redirect
edri = bedridden
erid = deride
erdi = herding
iedr = diedric (a term in electronics)
ierd = soldierdom
ider = wider
idre = minidress
ired = fired
irde = girded
deir = madeira (a kind of wine)
deri = bewildering
dier = bloodier
dire = direct
drei = dreigh (tedious and dull)
drie = driest
reid = preidentify
redi = accredit
ried = cried
ride = deride
rdei = hyperdeify
rdie = bombadier
Edited on January 13, 2005, 2:35 pm
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Posted by Penny
on 2005-01-13 14:34:36 |
Another one (weird but not dreigh)
