How to add and pronounce -ed

= Voiceless sounds are pronounced with /t/:

(p - s - sh - ch - f - p - k - x)

Ex : cooked = /kukt/

fixed = /fikst/

= Voice Sounds are pronounced with /d/:

(m - r - n- l - b - v - z - y - g - w)

Ex : called, closed

= Verbs with -t or -d as a final sound are pronounced as /id/ :

(d - t)

waited, needed