bbbb bnor bnrr bobb bobo bobu bojo boju bonn bono bonu boob boon boor bor- borj born boro borr boru boun bour brnj brno brob bron broo bror brou brrr brun bubb bubo bubu bujo buju bunb bunn buno bunu buon bur- burb burj burn buro burr buru j-ro jbob jobo jobu jojo jonn jono joon joor jorn joro joun jour jrbr jubu juju junb juno junr junu juon jurn jurr nbbj nbbo nnnn nobo nobu non- nonn nono nonu noo- noob nooj noon nooo noor nor- norb norn noro norr noun nour nron nunn nuno nuon nurn nurr nuru obbo obon obor obro onno onon onor onur oooo orbb orbo orbu orno oro- oron oror orro orub oruj ouju oun- our- ourn ouro ouu- rbbb rbbr rnbr rob- robb robo robu rojo rono roob roon roor roro roru roub roun rrrr rrun rubb rubu runn runo ruro ruru ruun ubbo ubon unno unon unro uor- uro- uroo urun urur uuno uuuu