Write a phonological rule, called 'gvs', which implements this part of the historical Great Vowel Shift.
alias gvs="sed 's/\([a-z]*\)\( ae \)\([a-z]*\)\( uh\)$/\1 ey \3/; s/\([a-z]*\)\( ih \)\([a-z]*\)\( uh\)$/\1 ai \3/; s/\([a-z]*\)\( eh \)\([a-z]*\)\( uh\)$/\1 iy \3/'"