[iv_08]

For index based operations code units are more useful than code points.

a = s.indexOf("e̬̱ͤ̈́̿̂̅́͟")

b = s.indexOf("m̛̮̩͙ͦ͗͆̄̋́̄")

s[a:b]

This operation is fast with code unit indices and slow with code point indices.