All the English-insane levidrome word pairs starting with the letter "U". There are 38 word pairs in this category.
- ud <=> du
- uel <=> leu
- uh <=> hu
- uhs <=> shu
- uit <=> tiu
- uk <=> ku
- ukiah <=> haiku
- ul <=> lu
- ulema <=> amelu
- ulua <=> aulu
- ulus <=> sulu
- um <=> mu
- uma <=> amu
- ume <=> emu
- umma <=> ammu
- un <=> nu
- una <=> anu
- ung <=> gnu
- unnet <=> tennu
- unni <=> innu
- up <=> pu
- upgo <=> ogpu
- ur <=> ru
- ura <=> aru
- urd <=> dru
- urian <=> nairu
- urim <=> miru
- urp <=> pru
- uruk <=> kuru
- us <=> su
- ush <=> hsu
- ut <=> tu
- util <=> litu
- utinam <=> manitu
- utis <=> situ
- uts <=> stu
- utta <=> attu
- uv <=> vu