. |
, , 1: aaaa;
- 3: aabb, abab, abba;
( ) - 4: aaab, aaba, abaa, baaa;
- 6: aabc, abac, baac, abca, baca, bcaa;
1: abcd.
, : 4 , , ( ).
, (abab, abca ..).
: . ,sony prs , , ,
iphone 4g , iphone , iphone 4g , iphone
ipad , ipad, , ipad , ipad
, 1._