ื ืืึทืข ืึทืจืืืงื: ืืขืกืืื ื 14-16 ืื ืฉืืืขืจ ืืจืืืืื: ื ืื ืืืืื ืืืืขืจ, ืึธืืขืจ ืืขืกืขืจ
ืฉืืืขืจ ืคืึธืจ ืงืึทืคึผืึทืฆืืืขื ืืืื ืฆื ืคืึทืจืืจืขืกืขืจื, ืึธืืขืจ ืื ืืืึผืงืก ืงืืจืก ืืื ืกืืขืืึทืื ืืืงืืืื ื ืืื ืื ืืขืฆืืข ืืึธืจื. ืึทืืื, ืฆื ืืึทืคืจืืึทืขื ืื ืขืจืฉืืขืจ 4 ืื ืคืึธืจ ื ืึธื 2 ืื ืืื ืก ืืขื ืขื ืืืืฃ ืคืึทืจืงืืืฃ, ืื ืื ืืึทืกืืจื ืคืืจืืจืืื ืืืืื ืฆืืืื ืืึธืจ, ืขืก ืืึธื ืืขืืืืขืจื ืืจืื ืืึธืจ ืฆื ืืขืจืืจืืืื ืื 8 ืื ืืืจืง, ืืื ืขืก ืืึธื ืืขืืืืขืจื ื ืึธื ืืจืื ืืึธืจ ืฆื ืืึธืคึผื ืื ืงืึทืคึผืึทืฆืืืขื ืคืื ืึท 3,5. -ืืื ืืฉ ืฉืืืขืจ ืคืึธืจ ืึทืืึธื ืขืก ืืื ืืขืืืขื ืืขืืืขื ืืืืื [โฆ]