-ose bbbb bbbs bbeb bebb bebe bebo beeb beek beer bees beke beko beks beo- beok beor beos bere berk bero berr bers bes- bese besk beso bess beze bobb bobe bobo bobs boee boeo boer boes boke boko boks boob booe book boor boos booz bor- bore bork boro borr bors borz bose bosk boso boss bozo breb bree brek breo brer bres brez brkb brob broe brok broo bror bros broz brrr brrs brsb brsr bseb bsee bser bses bsos bsse bzer bzoe bzrk bzzz ebbo ebbr ebbs eber ebes eboe eboo ebor ebos ebro eeee eees eeke eeks eero eers eese eesk eeze ekeb ekek eker ekes ekos eoes eore erbb erbe ereb erer eres erez erke erks erob eroe eroo eros erre erro errs erse erso esbo esbs esee esek eseo eser eses eske esko esks eso- esok esos esse esso ezek ezer ezzo k-os kbbb kbbe kbbk kbbo kbbr kbbs kbbz kbeb kbee kbek kbeo kber kbes kbez kbkb kbkk kbko kbkr kbkz kbob kboe kbok kboo kbos kboz kbrb kbre kbrk kbro kbrz kbsb kbsk kbso kbsr kbss kbsz kbze kbzo kbzs kbzz kebb kebe kebr keek keer kees kekb keke keko keks keok keos ker- kerb kere kerk kero kerr kers kerz kesb kesk keso kesr kess kesz kezb keze kezr kezz kkbb kkbe kkbo kkbr kkbs kkbz kkez kkkk kkob kkoo kkor kkoz kkrb kkre kkrk kkro kkrr kkrs kkrz kkse kksr kkss kkzz kobb kobe kobk kobo kobr kobs koes kokb koke kokk koko kokr koks kokz koob kook kooo koor koos kooz korb kore kork koro korr kors kos- kosb kose koso kosr koss kosz kozb koze kozk kozo kozr krbb krbe krbk krbr krbz kreb kree krek kreo kres krez krke krkk krko krkr krks krkz krob kroe krok kroo kror kros kroz krrb krre krrk krro krrr krrs krrz krse krsk krsr krss krze krzk krzr krzs krzz ksbr ksbs ksbz ksee ksek kseo kser ksez kskb kske kskk ksko kskr ksks kskz ksob ksok ksoo ksor ksos ksrb ksro ksrr ksrs ksrz ksse ksso kssr ksss kssz kszr kzbb kzbe kzbk kzbr kzbs kzbz kzee kzer kzke kzkr kzks kzkz kzoo kzor kzoz kzrb kzrk kzro kzrr kzrs kzrz kzsb kzse kzzb kzzk kzzo kzzr kzzs kzzz o-eo obbo ober obes obkb oboe obok obor obos obre obro obsr obss oere oers oese oker okes okko okok okor okre okro okso oobe ooer ooes oooo ooos oore oose ooze orbb orbe orbo orbs ore- oreb orek oreo orer ores orke orko oro- oroe orok oror oros oroz orro orrs orse orsk orso orzk orzo osbe osee osek oser oses osez osoo osor osos osro ossb osse osso ozee ozek ozer rbbb rbbr rbbs rbss rebb rebe rebk rebo rebs reeb reek rees reke reko reks reos rere rero rers rese reso ress reze rkos rkss rob- robb robe robo robs roer roes roke rokk roko rokr roks roob rook roor roos rooz rore rork roro rose roso ross roze rozz rrrr rsee rsos rsre s-os sbbs sber sbor sbrk sbse se-e se-k se-o se-s se-z sebe sebo sebs seeb seek seer sees seez seke sekk seko seok serb sere serk sero serr sers sese seso sess skee skeo sker skes skoe skor skss sobe sobo sobr sobs soeo soes soke sokk soko sook soor soos sorb sore soro sorr sors sose soso soss soz- soze sreb sreo sres sros ssbr ssee sses ssrs sssb ssss szob szss z-ro zbek zber zebe zeek zees zeke zeko zekr zeks zeos zerk zero zeze zobo zoes zoke zoo- zook zoos zorb zore zork zoro zors zoso zoss zozo zrze zsss zzzs zzzz