( 280 )
1
:
2
1 2 3
-1 -2 -3 -4 -1 -2 -3 -4 -1 -2 ..............:
3
. . .
(1 (2 (3 (4 (5 (6
4
.
. . . . .
........................................... : .............................................. 142 ............... :
.................................................................................................................. ................................................................................................................. .............................................................................................................. .................................................................................................................. ................................................................................................................... ................................................................................................................... ...................................................................................................................
.1 .2 .3 .4 .5 .6 .7
: ................................................................................................................... .1 ................................................................................................................... .2 5
................................................................................................................... ................................................................................................................... ................................................................................................................... ................................................................................................................... ...................................................................................................................
6
.3 .4 .5 .6 .7
7