Short forms in exams

Sir,
Could you tell me if we can use the short forms listed below in Accounts. Please put a Y/N against the respective numbers. If i do use them how much marks will be cut? I can afford to lose 2-3 marks for short forms as they will help me complete the paper.

1. P&L A/c (profit & loss a/c)
2. B/S (balance sheet)
3. CCE (cash & cash equivalents)
4. To, b/d (To, Balance b/d)
5. Exp. (expense)
6. Liab. (liability)
7. Adv. (advance)
8. Std. (standard)
9. Inv. (investments)
10. Cap. (capital)
11. Prov. (provision)
12. Int. (interest)
13. Op. Stock (opening stock)
14. t/f (transfer)
15. Adj. (adjustment)
16. W.N. (working notes)
17. FA (fixed assets)
18. ESOP
19. COGS
20. Do we have to total all accounts?

Please reply soon.
Thanking You,
Debjit Chaudhuri