-ic b-u bbb bbc bbi bbo bbs bbt bbu bcb bcc bci bco bcs bct bcu bi- bib bic bii bio bis bit biu bob boc boi boo bos bot bou bsb bsc bsi bso bss bst bsu btb btc bti bto bts btt btu bub buc bui buo bus but buu c-- cbb cbc cbi cbo cbs cbt cbu ccb ccc cci cco ccs cct ccu ci- cib cic cii cio cis cit ciu co- cob coc coi coo cos cot cou csb csc csi cso css cst csu ctb ctc cti cto cts ctt ctu cub cuc cui cuo cus cut cuu ibb ibc ibi ibo ibs ibt ibu icb icc ici ico ics ict icu iib iic iii iio iis iit iiu io- iob ioc ioi ioo ios iot iou is- isb isc isi iso iss ist isu itb itc iti ito its itt itu iu- iub iuc iui ius iut o-i ob- obb obc obi obo obs obt obu oc- ocb occ oci oco ocs oct ocu oib oic oii oio ois oit oiu oo- oob ooc ooi ooo oos oot os- osb osc osi oso oss ost osu ot- otb otc oti oto ots ott otu ou- ouc oui ouo ous out sbb sbc sbi sbo sbs sbt sbu scb scc sci sco scs sct scu sib sic sii sio sis sit siu sob soc soi soo sos sot sou ss- ssb ssc ssi sso sss sst ssu stb stc sti sto sts stt stu sub suc sui suo sus sut suu tbb tbc tbi tbo tbs tbt tbu tcb tcc tci tco tcs tct tcu tib tic tii tio tis tit tiu to- tob toc toi too tos tot tou tsb tsc tsi tso tss tst tsu ttb ttc tti tto tts ttt ttu tub tuc tui tuo tus tut tuu ubb ubc ubi ubo ubs ubt ubu ucb ucc uci uco ucs uct ucu uib uic uii uio uis uit uiu uob uoc uoo uos uot usb usc usi uso uss ust usu utb utc uti uto uts utt utu uuc uus uut uuu

-ous bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcit bcos bcsc bcss bctc bcts bcuc bibb bibi bibo bibs bicc bici bico bics biis bio- bioc bioi bios biot biou bis- bisc biso biss bist bisu bitc bito bits bitt bitu bobb bobi bobo bobs bobu boco bocs bocu boi- boii bois boit boiu boob booc boos boot bosc bosi boso boss bost bosu botb boti boto bots bott bous bout bsci bscs bsic bsos bssc bsts btcc btcs btob btss bttb btus bubb bubi bubo bubs bubu bucc buci buco bucs bucu buic buis buit buiu busc busi buss bust busu but- buti buto buts butt buus c-bo cbbc cbbs cbcc cbcs cbct cbcu cbit cbot cbsc cbsi cbtc cbus ccbc cccb cccc ccci cccs cccu ccic ccii ccis ccob ccoc ccsi ccss ccst cctb cctc cctt ccuc ccus ccut cibc cibi cibo cicc cici cico cics cict cicu ciii ciis ciit ciob cios cis- cisc ciss cist citb citi cito cits citt citu ciuc cius cobb cobi cobo cobs cobu coco coct cocu cois coit coob coos coot cosc cosi coso coss cost cotb cotc coti coto cots cott cotu coub cous cout cscb cscc csci csco cscs csib csio csis csit csob csos csot cstc csto csts csus ctbi ctbs ctic ctos ctot ctsc ctss ctsu ctts cub- cubb cubi cubs cucc cuci cui- cuis cuit cusb cuso cuss cust cusu cut- cutc cuto cuts cutt ibcs ibis ibos ibot ibss ibtb ibtc ibts ibus icbc icbs iccb iccc icci icco iccs icct iccu icis icoc icos icsb icsc icsi icss icst icts icub icus iiii iiio iiis iiit iioi iioo iios iisc iisi iist iisu iitt iiuc iobi ioci ioii ioio ioit iooi iooo ioos ioso iosu ioto ious isbt iscc isci isco iscs isct iscu isic isis isit iso- isoc isos issc issi isso isss issu istc isti isto ists isus itbs itcs itic itis itoi itoo itos itou itsi itso itsu itto iucc iuiu iuss iust obbo obis obit oboi obos obot obss obst obts obus ocbc occc occi occt ocis ocos oct- octi octo octs oici oiii oios oisc oist oisu oitc oiti oobi oooo ooos oosi oost ootb oots oous oscc osci osco osii osis osoi osoo osos ossb ossi osso ossu ostc osti osts otbs otic otis otit oto- otoo otos otso otsu otti otto otts ottu otus oubs oucc ouii ouis ouit oust out- outb outi outo outs ouu- s-ib s-ic s-ii s-os sbbs sbcc sbcs sbct sbic sbot sbsi sbst sbtc sbus scbi sccc sccs scct sci- scic scio scis scit scob scoo scot scsc scsi scso scst scsu sctc scto scts scub scut sibc sibi sibo sibs sibu sicc sici sico sics sicu siit sios siot siou sisc sisi siss sist sisu sit- sitc siti sito sits sitt situ siui sius siut sobo sobs sobt sobu soci soco socs soic sois soit soos soot sosi soso soss sost sotc soto sots sotu sous sout sscc ssci sscs ssis ssit ssoc ssot sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stcu stib stic stio stis stit stob stoo stos stot stou stsi stss sttc stub stuc stus stut sub- subb subi subo subs suc- succ suci sucs suio suis suit suos sus- susi suso suss sust susu suti suto sutu suus tbbs tbcb tbcc tbit tbst tcbs tccc tccu tcos tctc tcts tibi tibs tibu ticc tico tics tiit tiiu tios tiou tisb tisi tiso tiss tist titc titi tito tits titt titu tobi tobo tobs tobt tobu toci toco tois toit toos toot tosb tosc tosi toso toss tost tosu totc toti toto tots tott toui tous tout tsbc tscc tsis tsob tsoi tsos tsou tssi tsst tstc tsts tsui ttbb ttss tttt tubb tubo tubs tubu tucc tuco tuis tuit tuiu tuos tusc tusi tuss tust tuti tuto tuts tutt tutu