How to write 就就

(after a suppositional clause) in that case; then; (after a clause of action) as soon as; immediately after; (same as 是) merely; nothing else but; simply; just; precisely; exactly; only; as little as; as much as; as many as; to approach; to move towards; to undertake; to engage in; (often followed by 着) taking advantage of; (of food) to go with; with regard to; concerning; (pattern: 就 ... 也 ...) even if ... still ...; (pattern: 不 ... 就 ...) if not ... then must be ...