ć, ś, ń, ź, dź sounds all are spelled like this:
-ć,ś,ń, ź, dź before consonant and at the and of word - ci, si, ni, zi, dzi before a vowel.
- i before vovel is short, almost silent, it just "softens" consonant before,
nie sounds like "ńe", but nic souds like "ńic"
ń, ź, dź are voiced, ś and ć are voiceless