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The pronunciation of written -s, -es, 's
is based on the final sound of a word, before adding -s.

voiceless sound + voiceless /s/ stops +/s/	cats looks likes stops laughs its it's Silent t: elects paints lasts wants Silent th: months depths lengths
voiced sound + voiced /z/ call + /z/	arrives learns opens robs marries tries employs stays seas sees he's she's Silent th: clothes /klowz/
/s, z/ /ʃ, ʒ/ /ʧ, ʤh/ + /Iz/ miss + /Iz/	/s/ kisses entrances prices [written -ce = /s/] /z/ freezes causes [written -se = /s/ or /z/] /ʃ/ crashes washes /ʧ/ watches catches /ʤh/ changes encourages

stops +/s/

call + /z/

miss + /Iz/