???????? ?????????????

????2????????7? ??,?????(2??????????6????????????),????????????????????????,????????????????????????6~8????????,????9~13??;???????????????????????????????????????????8????8?,??????????????????????????????????????6~8???????????????????,?????12~16????,????????

???(7?????8??),??,?????????????????6~8???,?????????10?????;???????4~6?,?????????????8~10?,??????????????????????????????10????????

??????,7???????,?5~6??????????7~8????,????,??????????????9~10??????;???????????????????????9??????????????10~11???8??,??????????,??????????

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7??,????????????????,????????????????????????

????????,7????8???????????????,??????????????????????????,?????????????;????????????,??7?,?????

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