请问各位大佬能否实现，在拼音分词的时候，分析“一种”的时候，分词结果包括"yz"但不包含"y"或者"z"吗

这个是拼音分词器的设置

"filter": {
        "my_pinyin": {
          "type": "pinyin",
          "keep_first_letter": true,
          "keep_separate_first_letter": false,
          "keep_full_pinyin": true,
          "keep_joined_full_pinyin":true,
          "keep_original": true,
          "keep_none_chinese": true,
          "keep_none_chinese_in_first_letter": true,
          "keep_none_chinese_together":true,
          "keep_none_chinese_in_joined_full_pinyin":true,
          "limit_first_letter_length": 16,
          "lowercase": true,
          "trim_whitespace": true,
          "remove_duplicated_term": true
        }
      }

这个是我的分词结果

{
"tokens": [
{
"token": "yi",
"start_offset": 0,
"end_offset": 2,
"type": "CN_WORD",
"position": 0
}
,
{
"token": "一种",
"start_offset": 0,
"end_offset": 2,
"type": "CN_WORD",
"position": 0
}
,
{
"token": "yizhong",
"start_offset": 0,
"end_offset": 2,
"type": "CN_WORD",
"position": 0
}
,
{
"token": "yz",
"start_offset": 0,
"end_offset": 2,
"type": "CN_WORD",
"position": 0
}
,
{
"token": "zhong",
"start_offset": 0,
"end_offset": 2,
"type": "CN_WORD",
"position": 1
}
,
{
"token": "yi",
"start_offset": 0,
"end_offset": 1,
"type": "TYPE_CNUM",
"position": 2
}
,
{
"token": "一",
"start_offset": 0,
"end_offset": 1,
"type": "TYPE_CNUM",
"position": 2
}
,
{
"token": "y",
"start_offset": 0,
"end_offset": 1,
"type": "TYPE_CNUM",
"position": 2
}
,
{
"token": "zhong",
"start_offset": 1,
"end_offset": 2,
"type": "COUNT",
"position": 3
}
,
{
"token": "种",
"start_offset": 1,
"end_offset": 2,
"type": "COUNT",
"position": 3
}
,
{
"token": "z",
"start_offset": 1,
"end_offset": 2,
"type": "COUNT",
"position": 3
}
]
}