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Of course it’s not only vowel sounds that turn up in various orthographic guises in English. Consonants do it too.
I think ʃ is a pretty good example. It can be represented by <sh> as in ship, <ss> as in pressure, <ti> as in nation, <si> as in tension, <ch> as in Charlotte. The representation <s> used only to be found in the words sugar and sure (and derivatives), but increasingly the <s> in words like student, stew, street is pronounced as ʃ.

Add sch as in schedule and schwa
and sk in an old-fashioned pron of ski
Ooops, yes.
Thanks, Jack.
And ci in ‘technician’
And ssi in ‘mission’.
Thanks, Graham.
We should also add <sci> as in luscious.
And maybe <ce> as in some people’s pron. of licqourice.