OVERSUBSCRIBE

be bi bo er es is oe oi or os re si so us

bee bes bib bio bis bob bos bro brr bub bur bus cee cis cob cor cos cru cub cue cur ebb ecu ere err ers ess eve ice ire obe obi oes orb orc ore ors ose our reb rec ree rei res rev rib rob roc roe rub rue sec see sei ser sib sic sir sis sob sos sou sri sub sue urb use vee vie vis voe

beer bees bibs bice bier bios biro birr bise bobs bore boss bree brie brio bris bros bubo bubs burb burr burs buss cees cere cero cess cire cobb cobs coir core cors coss cove crib cris crus cube cubs cues curb cure curr curs cuss ebbs ecru ecus eros errs eses euro ever eves ices ires obes obis orbs orcs ores oses ours over rebs recs rees reis revs ribs rice rise rive robe robs rocs roes rose roue rove rube rubs ruer rues ruse secs seer sees seis sere sers sibb sibs sice sics sire sirs sobs sorb sore sori sour sous sris subs suer sues sure urbs uric user uses veer vees verb vibe vice vier vies vise voes