bbbb bbdd bbdo bbeb bbox bbpr bd-r bebb bebe bebo bede bedo beeb beed beep beer beo- beod beor bepo berd bere bero berr bobb bobe bobo bodb bode bodo boee boeo boep boer boob bood booe boop boor boox bope bopp bor- bord bore boro borr bpoe bprd brdo breb bred bree breo brep brer brex brob brod broe broo bror brox brrr d-bo dbpd dddd ddpo ddre debe dedd dede dedo deeb deed deep deer deop deor depe depo depp depr der- derb dere dero derp derr dex- dexe do-x dobb dobe dod- dodd dode dodo doer doob dood doop door dope dopo dopp dopr dord dore doro dorp dorr dper dppx dred dree drob drod drop dxbe dxbr dxdr dxed dxep dxrd dxre dxrp dxrr dxrx dxxr dxxx ebbo ebbr ebed eber eboe eboo ebor ebox ebpo ebro edde eddo eddp ede- eder edex edod eede eeee eero eode eore epee eper epod epor epox eppo eppp eprb epro eprp epxp er-x erbb erbe erde ereb ered erer erob erod eroe eroo erpe erre erro exed exer exo- exod exor expo expr exrx o-eo obbo obed ober obex oboe obor obox obre obro odbo oddd oded odeo oder odex odoo odop odor odrp oedo oere oobe ooer oooo oord oore oped opep oper opex opo- opor oppo orbb orbe orbo orde ordo ore- oreb ored oreo orer orex oro- oroe oror orpe orro oxep oxer oxo- oxox oxxo pbed pdpr ped- pede pedo peed peep peer peor pepd pepe pepo per- perd pere pero perp perr pobo pod- podd pode podo poed poer pood poop poor pop- pope popo popp porb pore poro porr pper ppod pppd pppo pppp pre- preb pred pree prep prex pro- prob prod proe proo prop prox prpd prrd rbbb rbbr rdbp rder rebb rebe rebo redd rede redo redr redx reeb reed reep reod reop repe repo repp repr rerd rere rero rexx rob- robb robe robo rodd rode rodo roed roer roob rood roop roor roox rope ropo rore roro roxo rpdp rpob rpoe rred rrrr x-ed xbee xbox xeer xer- xero xexe xoro xorp xoxo xper xrdb xrep xrod xxxo xxxx