(2,1)

{
},(
with
,
{,

in (3, is (
,
))

(
,

,


(
, (0),
(1),
(6
, (
,, (

,,
(
,
(
for (=
(
and,

, (

(1, (2, (
, ( ), (
( (2, (4))
(
(5 (,, (1, (1,
(,
,
(,1)),
(
(2),
(1(2,,(2,)) (1(1,
(2,
(

([]) (
(1
( [ (2)). (1, (2),
(
,
(2,(1 (2)) (1 (2), (1) (2).
(
(2, - ( of (1,
(2)),
( a,
(2),
(
(1, (1)
(2,(7( (2, , (1,), (2)
(1 (1, (,1)) (
(1 (1,)) (2)
(1 =(
(2), (
(1), (
),(
(1,, (1, (
)) (2(2), (2)，(2,( the,
(2))(
(1,
(1 to (
),
(2), (2),
(
, (2, (1, (2), (2,(
( \)) (
(
(2,(1), (1, (9)),(
(2), (
)
(
(2),
(1
(2), {
( at, { }{}) ( { in {
( { in, {
( { in ( { if {( in,({ in,(1), { in ({ but have ( in {)), { , {
( in { (1)) {
}
({ in {(1, ( { with(2, (1)) {
}( with in (2), ( in order with (1)= ( in) with {( in (1) with (1 in ( with (x), { are with( in, with
in which(2) { with the, in ({2) with the in that,( be with {( in ({ with {(2)) {
( with in (2), { in (2), {
} (1, with ( in) {
with the ( in {(2), with {
( { with in (1 with (1),
(1, with {(2), {
with {(a) { with (1),(2), with the ( in (1), { with ( in) { with (= { with(= { in with (1, { with the in (2)) {
( in with(2))。
(2 with (2) in (2),
(