"": 1 - 2 - " "... 6 - . 7 - point-to-point 8 - 9 - . 10 - ( )... 31 - - 32 - - 33 -
" ": 1 - 2 - ... 12 - 13 - point-to-point 14 - 15 - 16 - . !!!... 43 - )) 44 - 45 -