About pronumication of s/es

Hey guys,

I have a question about pronunciation of s/es after a word. According to my grammar book, there are some rules. Here are you go!

Voiceless +/s/ shops , gets takes, Voiceless sounds--p, t and k, any more ????

Voiced + /z/ jobs, hides ....... , Voiced sounds-- b, d ????

Sibilant +/iz/ buses /siz/ and loses /iz/ , Sibilant-- ?????

Can you guys have a better list to show which letters are voiceless, voiced and sibilant so that I can learn properly? It would be great if you can gives some examples as well.

Cheers
Ron