Words with Letters: r u b a b o o rubaboo 11baboo 9babu 8barb 8boar 6boob 8boor 6bora 6broo 6bubo 8bura 6burb 8 abo 5arb 5bar 5boa 5bob 7boo 5bra 5bro 5bub 7bur 5oar 3oba 5ora 3orb 5our 3rob 5rub 5urb 5ab 4ar 2ba 4bo 4or 2