[0-_-0]

But there is "sh" at the end of "shellfish"!

[zengargoyle]

That makes it Shell Friendly Interactive Shell which is redundant. Then there would be Shell Korn Shell, and Shell C shell. The 'sh' for Shell goes at the end as like a grammatical marker. It's postfix. Sh-FI-sh is awkward because it's prefix of the Shell -> 'sh' and also includes the 'sh' for Shell at the end making it a Shell X Shell sort of thing.

[0-_-0]

OK, I see the logic. How about "She Shell C Shells on the C Shore"?

[smoldesu]

there's also an 'sh' at the end of 'fish', which is why that's the name of the shell.