The Shell Law: In general, a shell seems to be the more preferred, the less similar the head and (the mirror image of) the coda are. In particular, identical speech sounds flanking the nucleus are disfavoured, all the more so the less their Consonantal Strength is. The antipathy increases notably if the identical speech sounds flanking the nucleus are not the only ones within their margins.
Standardized
The Shell Law: In general, a shell seems to be the more preferred, the less similar the head and (the mirror image of) the coda are. In particular, identical speech sounds flanking the nucleus are disfavoured, all the more so the less their Consonantal Strength is. The antipathy increases notably if the identical speech sounds flanking the nucleus are not the only ones within their margins.
Shell of a syllable = union of head and codaHead = part of syllable basis which precedes the nucleus