-ic bbb bbc bbd bbi bbo bbr bbs bcb bcc bcd bci bco bcr bcs bdb bdc bdd bdi bdo bdr bds bi- bib bic bid bii bio bir bis bob boc bod boi boo bor bos brb brd bri bro brr brs bsb bsc bsd bsi bso bsr bss c-- cbb cbc cbd cbi cbo cbr cbs ccb ccc ccd cci cco ccr ccs cdb cdc cdd cdi cdo cdr cds ci- cib cic cid cii cio cir cis co- cob coc cod coi coo cor cos crb crc crd cri cro crr crs csb csc csd csi cso csr css dbb dbc dbd dbi dbo dbr dbs dcb dcc dcd dci dco dcr dcs ddb ddc ddd ddi ddo ddr dds di- dib dic did dii dio dir dis dob doc dod doi doo dor dos drb drc drd dri dro drr drs dsb dsc dsd dsi dso dsr dss i-d ibb ibc ibd ibi ibo ibr ibs icb icc icd ici ico icr ics idb idc idd idi ido idr ids iib iic iid iii iio iir iis io- iob ioc iod ioi ioo ior ios ir- irb irc ird iri iro irr irs is- isb isc isd isi iso isr iss o-i ob- obb obc obd obi obo obr obs oc- ocb occ ocd oci oco ocr ocs odb odc odd odi odo odr ods oib oic oid oii oio oir ois oo- oob ooc ood ooi ooo oor oos or- orb orc ord ori oro orr ors os- osb osc osd osi oso osr oss rbb rbc rbd rbi rbo rbr rbs rcb rcc rcd rci rco rcr rcs rdb rdc rdd rdi rdo rdr rds rib ric rid rii rio rir ris rob roc rod roi roo ror ros rrb rrc rrd rri rrr rrs rsb rsc rsd rsi rso rsr rss sbb sbc sbd sbi sbo sbr sbs scb scc scd sci sco scr scs sdb sdc sdd sdi sdo sdr sds sib sic sid sii sio sir sis sob soc sod soi soo sor sos sr- srb src srd sri sro srr srs ss- ssb ssc ssd ssi sso ssr sss

bbbb bbbs bbci bbdd bbdo bbrc bcbc bcbs bccc bcci bccs bcds bcis bcor bcos bcrs bcsc bcss bd-r bdbc bddc bdii bdos bdsd bibb bibi bibo bibs bicc bici bico bics bidi bido bidr bids biis bio- bioc bioi bios birb bird biri biro birr birs bis- bisc bisd biso biss bobb bobi bobo bobs boco bocs bodb bodi bodo bods boi- boid boii bois boob booc bood boor boos bor- bord bori boro borr bors bosc bosi boso boss brcb brdo brds bric brid brio bris brob broc brod broo bror bros brrr brrs brsb brsr bsbd bsci bscs bsic bsod bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbdb cbdc cbdi cbdo cbds cbid cbir cbrd cbsc cbsi ccbc cccb cccc ccci cccs ccdc ccdi ccdr ccds ccic ccid ccii ccir ccis ccob ccoc ccod ccrc ccri ccrs ccsd ccsi ccss cd-r cdcs cddb cddr cdic cdii cdio cdis cdos cdrs cdss cibc cibi cibo cicc cici cico cicr cics cidc cidi cidr cids ciid ciii ciis ciob cior cios cirb circ ciri ciro cirr cirs cis- cisc cisd cisr ciss cobb cobi cobo cobs coco codd codi cods coir cois coob cood coos cor- corb corc cord cori coro corr cors cosc cosi coso coss crbc crcc crcr crdc crib cric cris crob croc crod croo cror crss cscb cscc cscd csci csco cscr cscs csdb csdr csib csid csio csir csis csob csor csos csrc csrd csrs cssd cssr d-bo dbcc dbcs dbos dbrs dbss dcbc dccb dccc dcci dccs dcdb dcds dcii dcio dcis dcos dcsc dcss dddd ddoc ddrc ddss dibb dibo dibs dici dico didi dido dids diii diis dioc dior dios dird dirr dirs dis- disc disd disi diso diss dobb dobi dobs doci doco docs dod- dodd dodi dodo dods doid dois doob dood door doos dorc dord dori doro dorr dors dosi doso doss drbc drib dric drob drod drrs dsbc dscc dscr dscs dsdr dsos dsrc dsri dsrr dssc dssi ibcs ibdo ibid ibis ibos ibrc ibrd ibri ibro ibss icbc icbd icbs iccb iccc icci icco iccr iccs icdc icdd icis icoc icod icor icos icrc icrr icrs icsb icsc icsd icsi icsr icss idcr iddo idic idid idio idir idis idoc idos idrc idro idsc idso idss iicd iiii iiio iiis iioi iioo iios iirc iirs iisc iisd iisi iisr iobi ioci iod- iodd iodo ioii ioio iooi iooo ioos iori iors ioso ircc ircd ircs irdc irdo irds iri- iric irid irio iris irob iroc irod irrc irri irrs isbd iscc iscd isci isco iscr iscs isdb isdc isds isic isis iso- isoc isor isos isri issc issi isso issr isss obbo obid obis oboi obor obos obri obro obsd obsr obss ocbc occc occi ocds ocis ocos ocro ocrr ocrs odbo odci oddd oddi odds odic odio odir odis odoo odor odos odso oici oido oids oiii oios oisc oisd oobi oocr oodi ooid oooo ooos oord oosi orbb orbi orbo orbs orci orco orcs ordo ords ori- oric orid orio oris oro- oror oros orri orro orrs orsi orso oscc osci osco osdi osii osis osoi osoo osor osos osrd osro ossb ossd ossi osso rbbb rbbr rbbs rbds rbis rbsd rbss rcbc rcbo rccb rccc rccs rcdc rcds rcic rcid rcis rcos rcrd rcsc rcsd rcsi rcss rdio rdoc rdos rdso rib- ribo ribs ricc rico rics ridc ridd ridi rido rids riis rios riri rirs risc risd risi riso riss rob- robb robi robo robs rocc roco rocs rodd rodi rodo rods roid roio roir rois roob rood rooi roor roos rorc rori roro rosc rosi roso ross rrrr rsbi rscc rscs rsdd rsds rsid rsis rsos s-ib s-ic s-ii s-os sbbs sbcc sbcs sbds sbic sbor sbsd sbsi scbi sccc sccs scdc scds sci- scic scid scio scir