| ruddles | |
| riddles |
| Riddles, Chinese | ปริศนาคำทายจีน [TU Subject Heading] |
| Riddles, Thai | ปริศนาคำทายไทย [TU Subject Heading] |
| riddles | The doctor is trying to solve many of the riddles of cancer. |
| riddles | This chapter will focus on the riddles of the planets. |
| riddles |