Usage of suffixes Hi. Can we add suffixes to any noun?

Can I use these phrases?? Hi.. I'm searching for a phrase instead of 'I forgot the poem' to use it as a title. I thought of a phrase that might look funny but I want to know if it's correct or usable?? The phrase is 'The Slipped Poem' (like it slipped my mind) I'll be happy if you can also provide me with your suggestions. Thank you.

can you help me translate this?? Hi, I use quotes, dialouges and sort of things to learn new words and practice korean. I will be happy if you help me in this way.. 무너지지 않는 날은 올거야 ------- Day will come. I can't understand it fully. I'll be happy if u help me♡

Can you help me translate this? Hi, I use quotes, dialouges and sort of things to learn new words and practice korean. I will be happy if you help me in this way..

무너지지 않는 날은 올거야
------- Day will come.

I can't understand it fully. I'll be happy if u help me♡

I need help in translating some sentences.

Hi. I'll be happy if you help me with these:

1. 그사람들이 달렸습니다.

2. 지은이 달렸습니다.

3. 목격했습니다.

4. 그 5년의 기록입니다.

5. 서울에서 공개합니다.