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Here's a simple footnote,[^1] and a second [^2], third [^3], fourth [^4], fifth [^5], sixth [^6], seventh [^7], eighth [^8], ninth [^9], tenth [^10], 11th [^11], 12th [^12], 13th [^13], 14th [^14], 15th [^15], 16th [^16], 17 [^17], 18th [^18], 19th [^19], 20th [^20], 21st [^21]
[^1]: seen
[^2]: mean
[^3]: bean
[^4]: lean
[^5]: keen
[^6]: yin
[^7]: gin
[^8]: grin
[^9]: din
[^10]: find
[^11]: bind
[^12]: kind
[^13]: rind
[^14]: much
[^15]: such
[^16]: cow
[^17]: now
[^18]: blue
[^19]: red
[^20]: ache
[^21]: bake