-ic bbb bbc bbd bbi bbo bbs bbt bcb bcc bcd bci bco bcs bct bdb bdc bdd bdi bdo bds bdt bi- bib bic bid bii bio bis bit bob boc bod boi boo bos bot bsb bsc bsd bsi bso bss bst btb btc btd bti bto bts btt c-- cbb cbc cbd cbi cbo cbs cbt ccb ccc ccd cci cco ccs cct cdb cdc cdd cdi cdo cds cdt ci- cib cic cid cii cio cis cit co- cob coc cod coi coo cos cot csb csc csd csi cso css cst ctb ctc ctd cti cto cts ctt dbb dbc dbd dbi dbo dbs dbt dcb dcc dcd dci dco dcs dct ddb ddc ddd ddi ddo dds ddt di- dib dic did dii dio dis dit dob doc dod doi doo dos dot dsb dsc dsd dsi dso dss dst dtb dtc dtd dti dto dts dtt i-d ibb ibc ibd ibi ibo ibs ibt icb icc icd ici ico ics ict idb idc idd idi ido ids idt iib iic iid iii iio iis iit io- iob ioc iod ioi ioo ios iot is- isb isc isd isi iso iss ist itb itc itd iti ito its itt o-i ob- obb obc obd obi obo obs obt oc- ocb occ ocd oci oco ocs oct odb odc odd odi odo ods odt oib oic oid oii oio ois oit oo- oob ooc ood ooi ooo oos oot os- osb osc osd osi oso oss ost ot- otb otc otd oti oto ots ott sbb sbc sbd sbi sbo sbs sbt scb scc scd sci sco scs sct sdb sdc sdd sdi sdo sds sdt sib sic sid sii sio sis sit sob soc sod soi soo sos sot ss- ssb ssc ssd ssi sso sss sst stb stc std sti sto sts stt tbb tbc tbd tbi tbo tbs tbt tcb tcc tcd tci tco tcs tct tdb tdc tdd tdi tdo tds tdt tib tic tid tii tio tis tit to- tob toc tod toi too tos tot tsb tsc tsd tsi tso tss tst ttb ttc ttd tti tto tts ttt

bbbb bbbs bbci bbdd bbdo bcbc bcbs bccc bcci bccs bcds bcis bcit bcos bcsc bcss bctc bcts bdbc bddc bdii bdos bdsd bibb bibi bibo bibs bicc bici bico bics bidi bido bids biis bio- bioc bioi bios biot bis- bisc bisd biso biss bist bitc bitd bito bits bitt bobb bobi bobo bobs boco bocs bodb bodi bodo bods boi- boid boii bois boit boob booc bood boos boot bosc bosi boso boss bost botb botd boti boto bots bott bsbd bsci bscs bsic bsod bsos bssc bssd bsts btcc btcs btdt btob btss bttb c-bo c-cd cbbc cbbs cbcc cbcs cbct cbdb cbdc cbdi cbdo cbds cbid cbit cbot cbsc cbsi cbtc ccbc cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccob ccoc ccod ccsd ccsi ccss ccst cctb cctc cctt cdcs cddb cdic cdii cdio cdis cdos cdot cdss cibc cibi cibo cicc cici cico cics cict cidc cidi cids cidt ciid ciii ciis ciit ciob cios cis- cisc cisd ciss cist citb citi cito cits citt cobb cobi cobo cobs coco coct codd codi cods cois coit coob cood coos coot cosc cosi coso coss cost cotb cotc coti coto cots cott cscb cscc cscd csci csco cscs csdb csib csid csio csis csit csob csos csot cssd cstc cstd csto csts ctbi ctbs ctic ctos ctot ctsc ctss ctts d-bo dbcc dbcs dbit dbos dbss dbtt dcbc dccb dccc dcci dccs dcct dcdb dcds dcii dcio dcis dcos dcsc dcss dctc dcts dddd ddoc ddot ddss ddts dibb dibo dibs dici dico dict didi dido dids diii diis dioc dios diot dis- disc disd disi diso diss dist diti dito dits ditt dobb dobi dobs doci doco docs doct dod- dodd dodi dodo dods doid dois doit doob dood doos doot dosi doso doss dost dotd doti doto dots dott dsbc dscc dscs dsos dssc dssi dsst dstc dsto dsts dtcc dtot dtss ibcs ibdo ibid ibis ibos ibot ibss ibtb ibtc ibts icbc icbd icbs iccb iccc icci icco iccs icct icdc icdd icis icoc icod icos icsb icsc icsd icsi icss icst icts iddo idic idid idio idis idoc idos idsc idso idss idts iicd iiii iiio iiis iiit iioi iioo iios iisc iisd iisi iist iitt iobi ioci iod- iodd iodo ioii ioio ioit iooi iooo ioos ioso ioto isbd isbt iscc iscd isci isco iscs isct isdb isdc isds isic isis isit iso- isoc isos issc issi isso isss istc istd isti isto ists itbs itcs itdo itic itis itoi itoo itos itsi itso itto obbo obdt obid obis obit oboi obos obot obsd obss obst obtd obts ocbc occc occi occt ocds ocis ocos oct- octi octo octs odbo odci oddd oddi odds odic odio odis odoo odos odot odso odts oici oido oids oiii oios oisc oisd oist oitc oiti oobi oodi ooid oooo ooos oosi oost ootb oots oscc osci osco osdi osii osis osoi osoo osos ossb ossd ossi osso ostc osti osts otbd otbs otcd otic otis otit oto- otoo otos otso otti otto otts s-ib s-ic s-ii s-os sbbs sbcc sbcs sbct sbds sbic sbot sbsd sbsi sbst sbtc scbi sccc sccs scct scdc scds sci- scic scid scio scis scit scob scoo scot scsc scsd scsi scso scst sctc sctd scto scts sdcc sdco sddc sdds sdib sdic sdio sdot sdsc sdss sibc sibi sibo sibs sicc sici sico sics sidd sidi sido sids siit siod sios siot sisc sisd sisi siss sist sit- sitc sitd siti sito sits sitt sobo sobs sobt soci soco socs sodd sodo sods soic sois soit sood soos soot sosi soso soss sost sotc soto sots sscc ssci sscs ssdc ssdd ssid ssis ssit ssoc ssot sssb sssc sssi ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stds stib stic stid stio