|Rank|Nation|Gold|Silver|Bronze|Total|
|---|---|---|---|---|---|
|1|China (CHN)|14|10|12|36|
|2|Thailand (THA)|13|9|6|28|
|3|South Korea (KOR)|6|7|10|23|
|4|Indonesia (INA)|6|6|4|16|
|5|Chinese Taipei (TPE)|3|6|6|15|
|6|India (IND)|2|0|1|3|
|7|Iran (IRI)|2|0|0|2|
|8|Japan (JPN)|1|3|2|6|
|9|Afghanistan (AFG)|1|0|0|1|
|9|Qatar (QAT)|1|0|0|1|
|11|Philippines (PHI)|0|2|2|4|
|12|Vietnam (VIE)|0|2|1|3|
|13|Kazakhstan (KAZ)|0|1|1|2|
|13|Pakistan (PAK)|0|1|1|2|
|15|Bahrain (BRN)|0|1|0|1|
|15|Turkmenistan (TKM)|0|1|0|1|
|17|Sri Lanka (SRI)|0|0|2|2|
|18|Bangladesh (BAN)|0|0|1|1|
|18|Brunei (BRU)|0|0|1|1|
|18|Laos (LAO)|0|0|1|1|
|18|Mongolia (MGL)|0|0|1|1|
|18|Palestine (PLE)|0|0|1|1|
|18|Singapore (SIN)|0|0|1|1|
|Total|Total|49|49|54|152|

Question: how many combined silver medals did china, india, and japan earn ?
Answer: 13