结巴对自定义的英文词不生效吗？

[minmie]

import jieba

print('添加新词前')
q = 'abb123plus'
res = jieba.lcut(q, HMM=False, cut_all=True)
print(res)
q = '青眼白龙'
res = jieba.lcut(q, HMM=False, cut_all=True)
print(res)


print('添加新词后')
jieba.add_word("青眼白龙")
jieba.add_word('abb123')

q = 'abb123plus'
res = jieba.lcut(q, HMM=False, cut_all=True)
print(res)

q = '青眼白龙'
res = jieba.lcut(q, HMM=False, cut_all=True)
print(res)

jieba.suggest_freq('abb123', True)
q = 'abb123plus'
res = jieba.lcut(q, HMM=False, cut_all=True)
print(res)

输出结果：

添加新词前
['abb123plus']
['青眼', '眼白', '龙']
添加新词后
['abb123plus']
['青眼', '青眼白龙', '眼白', '龙']
['abb123plus']

请问结巴对自定义的英文词不生效吗，abb123并没有分出来。