-ic bbb bbc bbg bbi bbk bbo bbr bbs bbt bcb bcc bcg bci bck bco bcr bcs bct bgb bgc bgg bgi bgk bgo bgr bgs bgt bi- bib bic big bii bik bio bir bis bit bkb bkc bkg bkk bko bkr bks bkt bob boc bog boi bok boo bor bos bot brb brg bri brk bro brr brs brt bsb bsc bsg bsi bsk bso bsr bss bst btb btc btg bti btk bto btr bts btt c-- cbb cbc cbg cbi cbk cbo cbr cbs cbt ccb ccc ccg cci cck cco ccr ccs cct cgb cgc cgg cgi cgo cgr cgs cgt ci- cib cic cig cii cik cio cir cis cit ckb ckc cki cko cks ckt co- cob coc cog coi cok coo cor cos cot crb crc crg cri crk cro crr crs crt csb csc csg csi csk cso csr css cst ctb ctc ctg cti ctk cto ctr cts ctt gbc gbg gbi gbk gbo gbr gbs gbt gcb gcc gcg gci gck gco gcr gcs gct ggb ggc ggg ggi ggo ggr ggs ggt gib gic gig gii gik gio gir gis git gkb gko gks gkt gob goc gog goi gok goo gor gos got grb grc grg gri grk gro grr grs grt gsb gsc gsg gsi gsk gso gsr gss gst gtb gtc gtg gti gtk gto gtr gts gtt ibb ibc ibg ibi ibk ibo ibr ibs ibt icb icc icg ici ick ico icr ics ict igb igc igg igi igk igo igr igs igt iib iic iii iio iir iis iit ikb ikc iki ikk iko ikr iks ikt io- iob ioc iog ioi ioo ior ios iot ir- irb irc irg iri irk iro irr irs irt is- isb isc isg isi isk iso isr iss ist itb itc itg iti itk ito its itt k-t kbb kbc kbi kbk kbo kbr kbs kcb kcc kcg kci kck kcr kcs kct kgb kgc kgi kgo kgs kib kic kig kii kik kio kir kis kit kkb kkc kki kkk kkr kks kkt kob koc kog koi kok koo kor kos kot krc krg kri krk kro krr krs krt ksb ksc ksg ksi ksk kso ksr kss kst ktb ktc ktg ktk kto ktr kts ktt o-i ob- obb obc obg obi obk obo obr obs obt oc- ocb occ ocg oci ock oco ocr ocs oct ogc ogg ogi ogo ogs ogt oib oic oii oik oio oir ois oit okb okc okg oki okk oko okr oks oo- oob ooc oog ooi ook ooo oor oos oot or- orb orc org ori ork oro orr ors ort os- osb osc osg osi osk oso osr oss ost ot- otb otc otg oti otk oto otr ots ott rbb rbc rbg rbi rbk rbo rbr rbs rbt rcb rcc rcg rci rco rcr rcs rct rgb rgc rgg rgi rgk rgo rgr rgs rgt rib ric rig rii rik rio rir ris rit rkb rkc rkg rkk rko rks rkt rob roc rog roi rok roo ror ros rot rrb rrc rrg rri rrk rrr rrs rrt rsb rsc rsg rsi rsk rso rsr rss rst rtb rtc rtg rti rtk rto rtr rts rtt sbb sbc sbg sbi sbk sbo sbr sbs sbt scb scc scg sci sck sco scr scs sct sgb sgc sgg sgi sgk sgo sgr sgs sgt sib sic sig sii sik sio sir sis sit sk- skb skc skg ski skk sko skr sks skt sob soc sog soi sok soo sor sos sot sr- srb src srg sri srk sro srr srs srt ss- ssb ssc ssg ssi ssk sso ssr sss sst stb stc stg sti stk sto str sts stt tbb tbc tbg tbi tbk tbo tbr tbs tbt tcb tcc tcg tci tck tco tcr tcs tct tgb tgc tgg tgi tgk tgo tgr tgs tgt tib tic tig tii tik tio tir tis tit tkb tkc tkg tkk tko tkr tks tkt to- tob toc tog toi tok too tor tos tot trb trc trg tri trk tro trr trs trt tsb tsc tsg tsi tsk tso tsr tss tst ttb ttc ttg tti ttk tto ttr tts ttt

bbbb bbbs bbci bbrc bbrg bcbc bcbg bcbs bccc bcci bccs bcgs bcis bcit bcor bcos bcrs bcsc bcss bctc bcts bggs bgst bibb bibi bibo bibs bicc bicg bici bick bico bics bigb bigc bigg bigo bigs bigt biis biko bio- bioc biog bioi bios biot birb birg biri birk biro birr birs birt bis- bisc bisk biso biss bist bitc bito bits bitt bobb bobi bobo bobs bock boco bocs bogg bogi bogo bogs bogt boi- boii bois boit boki boko boks boob booc boog book boor boos boot bor- borg bori bork boro borr bors bort bosc bosi bosk boso boss bost botb boti boto bots bott brcb bric brig brik brio bris brit brkb brob broc brog brok broo bror bros brot brrr brrs brsb brsr brst brtc bsci bscs bsgs bsic bskt bsos bssc bsts btcc btcs btob btor btrc btrt btss bttb c-bo cbbc cbbs cbcc cbcr cbcs cbct cbgb cbir cbit cbkg cbko cbkr cbot cbrt cbsc cbsi cbtc ccbc cccb cccc ccci cccs ccgc ccgs ccgt ccic ccii ccir ccis ccob ccoc ccrc ccrg ccri ccrs ccrt ccsg ccsi ccss ccst cctb cctc cctt cgcc cgcg cggs cgis cgro cgsb cgss cgst cibc cibi cibo cicc cici cico cicr cics cict cigi cigs ciii ciis ciit ciko cikr ciob cior cios cirb circ ciri cirk ciro cirr cirs cirt cis- cisc cisk cisr ciss cist citb citg citi cito cits citt ckbc ckbi ckck ckco ckcs ckgo ckob ckoc ckoi ckoo ckor ckos ckot ckrc cksb ckso ckst cktb ckts cobb cobi cobo cobs cock coco coct cogi cogo cogs coir cois coit cok- coko coob cook coos coot cor- corb corc corg cori cork coro corr cors cort cosc cosi coso