Please answer corect plss :) plss corect

1. 19
Rule: Plus 4
2. 67
Rule: Plus 4+4=8+8=16+16=32
3. 4
Rule: Subtract 8-4=4-2=2-1=1
4. 167
Rule; Plus 6+6+6=18+18+18=54+54+54=162
If my answer is wrong, please correct me ty...
#CarryOnLearning