[Andrew 25:17]

If I did math well you recieved 19 punishments so you need one more:

Kneel and bend over on a chair seat/couch/whatever and stuff your panties in your mouth to not disturb anyone during your punishment (if is not against limits/thread rules), now:

20 mild spanks on each cheek using plastic brush;
15 moderate spanks on each cheek using wooden paddle;
15 moderate spanks on each cheek using wooden spoon
10 hard spanks on each cheek using belt

Now take a break, spend 15 minutes at corner, kneeling sitting on your heels and pondering on your behaviour

then finally

10 hard strike using cord.