4 letter anagrams 15 results biff bito boff boti bout buff bufo fifo fiot obit tiff tiou toff tofu tuff
3 letter anagrams 35 results bio bit bot btu but fbi fib fit fob fot fou fub fut ibo iff iof iou ito obi off oft ouf oui out tib tiu tob toi tou tub tui ubi ufo uit uti