「のように」。

The phrase のように, meaning like or in the way of—as in kawa no nagare no you ni, like the flowing of a river—is one of those phrases written in kana that I always suppose must have some kanji background. Today I noticed an on'yomi that's a really good contender: 形, katachi, shape/form, has the on'yomi よう. So—川の流れの形に?