을 세우고

… and make

→ 을
phrase Uncommon #10,098
… and make The meaning of 세우다 depends on what comes before 을: with 계획 (plan), it means “make” or “devise”; with a physical object, it can mean “erect” or “raise.”
KO: 계획을 세우고 실행하자.
EN: Let's make a plan and carry it out.