土 tǔ earth
十 shí ten
一 yī one
丨 gǔn line
一 yī one
NB. Synonyms: Structural analysis of the Chinese characters, Breakdown of the Chinese characters, Chinese characters split.
More information:
http://www.lulu.com/content/e-book/the-chinese-character-decomposition-guidance/18847104 http://www.lulu.com/spotlight/polina985