SUBREGIONS

be bi bo en er es go in is ne no nu oe oi on or os re si so un us

beg ben bes big bin bio bis bog bos bro bug bun bur bus ego eng ens eon erg ern ers ess gen gib gie gin gnu gob gor gos gun ins ion ire neb neg nib nob nog nor nos nub nus obe obi oes one ons orb ore ors ose our reb reg rei res rib rig rin rob roe rub rue rug run seg sei sen ser sib sin sir sis sob son sos sou sri sub sue sun uns urb urn use

begs bens berg bier bigs bine bins biog bios biro bise bogs bone bong bore born boss bren brie brig brin brio bris bros bugs bung buns burg burn burs buss ebon egis egos engs eons ergo ergs erns eros euro gens genu gibe gibs gien gies gins girn giro gnus gobs goer goes gone gore grin grub grue guns inro ions ires iron nebs negs ness nibs nobs noes nogs noir nori nose nous nubs obes obis ogre ones onus orbs ores oses ours rebs regs rein reis ribs rigs ring rins rise robe robs roes rose roue rube rubs rues rugs ruin rune rung runs ruse sego segs seis sers sibs sign sine sing sins sire sirs snib snob snog snub snug sobs sone song sons sorb sore sori sorn sour sous sris subs suer sues sung suns sure unbe urbs urge urns user uses