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/я / is replaced by /а/ after ж,ч,ш,щ,г,к,х.
ж,ц,ш are always hard.

the letter "e" is a soft ending in море but how about in кладбище and болотце? I'm wondering because кладбище and болотце take hard endings in declension yet their last letter (e) is soft.
thanks
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