.................................................................1 1 .................................................1 1.1 ....................................................................... 1 1.2 ....................................................................... 1 1.3 ......................................................... 2 2 ........................................................2 2.1 ................................................................ 2 2.2 ................................................................ 3 3 ..........................................3 3.1 .................................................................... 3 3.2 .................................................................... 4 4 ........................................................5 4.1 ....................................................................... 5 4.2 ....................................................................... 5 ..........................................7