These are the rules for pronouncing the past form of regular verbs in English.

2. Voiced sounds Voiceless sounds
/z/ /ʒ/ /d/ /b/ /r/ /p/ /t/ /k/
/v/ /dʒ/ /g/ /w/ /l/ /f/ /θ/ /s/
/ð/ /m/ /n/ /j/ /ŋ/ /ꭍ/ /ʧ/ /h/

3. Verb in present tense Verb in past tense Correct pronunciation
Walk (voiceless) Walked /ˈwɔːkt/
Stop (voiceless) Stopped /stɒpt/
Wash (voiceless) Washed /wɒʃt/
Clean (voiced) Cleaned /kliːnd/
Call (voiced) Called /kɔːld/
Follow (voiced) Followed /ˈfɒləʊd/
Decide (/d/) Decided /dɪˈsaɪdɪd/
Want (/t/) Wanted /ˈwɒntɪd/

4. /t/ /d/ /Id/
Watch Cycle Accept
Bake Wonder Visit
Smoke Damaged Decide
Help Play Include
Finish Clean Lift
Bake Remove Select
Shop Listen Act
Dress Kill Celebrate
Ask Replace Wait
Work Admire Need
/t/ /d/ /Id/
Blush Achieve Invite
Walk Cry Complete
Enjoy Call Count
Jump Travel Add
Ache Answer Taste
Brush Spill Want
Clap Battle Shout
Wish Live Attempt
Touch Film Avoid
Check Hug Bolt

5. Presentation designed by: Manuel Medina (2016)