-ose bbbb bbbs bbeb bbrc bcbc bcbs bccc bccs bcec bcer bces bcor bcos bcrs bcsc bcss bebb bebe bebo becs beeb beer bees beo- beor beos berc bere bero berr bers bes- bese beso bess bobb bobe bobo bobs boce boco bocs boec boee boeo boer boes boob booc booe boor boos bor- bore boro borr bors bosc bose boso boss brcb brce breb brec bree breo brer bres brob broc broe broo bror bros brrr brrs brsb brsr bscs bseb bsec bsee bser bses bsos bssc bsse c-bo cbbc cbbs cbcc cbce cbcr cbcs cbec cbee cber cbre cbsc cbse ccbc cccb cccc cccs ccee ccob ccoc ccrc ccre ccrs ccss cebs cec- cece ceco cecs ceeb ceec cees ceor ceos cer- cerc cere cero cers cesc cese cesr cess cobb cobe cobo cobs coce coco coes coob coos cor- corb corc core coro corr cors cosc cose coso coss crbc crcc crce crcr cre- creb crec cree creo cres crob croc croe croo cror crss cscb cscc csce csco cscr cscs csec csee cser csob csor csos csrc csrs csse cssr ebbc ebbo ebbr ebbs ebcc eber ebes eboe eboo ebor ebos ebro ecbc ecbe eccb eccc ecce ecco eces eco- ecos ecrc ecrr ecsc ecse ecss eecs eeee eees eeoc eerc eero eers eese eoes eore erbb erbe ercc erce ereb erec erer eres erob eroc eroe eroo eros errc erre erro errs erse erso esbo esbs escb esce esco escr escs esee eseo eser eses eso- esos esse esso o-eo obbo obec ober obes oboe obor obos obre obro obsr obss ocbc occc oce ocee ocos ocre ocro ocrr ocrs oec- oecc oeec oere oers oese oobe oocr ooer ooes oooo ooos oore oose orbb orbe orbo orbs orce orco orcs ore- oreb orec oreo orer ores oro- oroe oror oros orro orrs orse orso osbe oscc osce osco osec osee oser oses osoo osor osos osro ossb osse osso rbbb rbbr rbbs rbss rcbc rcbo rccb rccc rccs rcos rcsc rcss rebb rebe rebo rebs recc rece recr recs reeb rees reos rere rero rers rese reso ress rob- robb robe robo robs rocc roce roco rocs roer roes roob roor roos rorc rore roro rosc rose roso ross rrrr rscc rscs rsee rsos rsre s-os sbbs sbcc sbcs sber sbor sbse sccc scce sccs scec scee scer scob scoo scor scr- scrc scre scrs scsc scso scsr se-c se-e se-o se-s sebe sebo sebs sec- secc sece seco secr secs seeb seec seer sees seoc serb serc sere sero serr sers sesc sese seso sess sobe sobo sobr sobs soce soco socr socs soec soeo soes soor soos sorb sore soro sorr sors sose soso soss srbc srcc sreb srec sreo sres sros ssbr sscc ssce sscs ssec ssee sses ssoc ssrc ssrs sssb sssc ssss