User blog comment:Ensoka/I don't know why I'm still here/@comment-35301431-20150823233654/@comment-1523675-20150824050344

The fact is, it's almost impossible to list up every compound word where consonant change occurs. Some rules have been found, "but at times unpredictable, with certain words unaffected by it."

We are forced to memorize - I say "are forced to memorize", not "learn" - nearly 2,000 kanji characters from 1st to 9th grade at school. In addition countless kanji words that are consist of two or more characters, many of them have consonant changes or irregular readings. It's practically out of my hand to teach you each of them. Only your own earnest effort enables you to write and read kanji words correctly.