30 ืืืืื ืืกืืกืืืช ืืืืืจื ื, ืืฉืื ืืจืืฉืื ืืื ืืืช ืืืฆืจ ืืืืื ืืฆืื ืืืืื.
This is premium study material. Sign in or create a free account to get started.