0Not easy questions, Bubu, and I am only trying to answer some, because no one else has: 02br 02br 02br 00'Expenditure', my dictionary says, is irregularly formed from 'expend', so no reason beyond history of use is accessible. 02br 02br 00'Mixture' has a 't' because it is derived from the Latin 01i 00mixtus02i 00-- again from my dictionary. 02br 02br 00'Apologetic' goes all the way back to Greek 01i 00apologetikos02i 00.
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