Quite a number of the Chinese radicals have more than 1 option of their writing.
Radical No. 2 亅 jué ’hook’ has another option of writing: 了,
Radical No. 5 乙 yǐ ‘second’ has the options of writing: 乚⺄㇆乛,
Radical No. 8 八 bā ’eight’ has the option of inverted writing: 丷,
Radical No. 12 刀 dāo ’knife’ has the following options of writing: ⺈クリ刂 etc.
For more detais on that please check: “Table of the Chinese Radicals” by Polina Shinkina