N4 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ/です, so there are no forms to conjugate.
できれば
dekirebaif possibleN4expression
Example sentences2
できれば、窓側の席がいいな。
dekireba, madogawa no seki ga ii na.
If possible, I'd like a window seat. casual
できれば、来週までにご返信ください。
dekireba, raishuu made ni go henshin kudasai.
Please reply by next week, if possible. formal