-ic bbb bbc bbd bbf bbh bbi bbo bbr bbs bcb bcc bcd bcf bch bci bco bcr bcs bdb bdc bdd bdf bdh bdi bdo bdr bds bfb bfc bfd bff bfh bfi bfo bfr bfs bhb bhc bhd bhf bhh bhi bho bhr bhs bi- bib bic bid bif bih bii bio bir bis bob boc bod bof boh boi boo bor bos brb brd brf brh bri bro brr brs bsb bsc bsd bsf bsh bsi bso bsr bss c-- cbb cbc cbd cbf cbh cbi cbo cbr cbs ccb ccc ccd ccf cch cci cco ccr ccs cdb cdc cdd cdf cdh cdi cdo cdr cds cfb cfc cfd cff cfh cfi cfo cfr cfs ch- chb chc chd chf chh chi cho chr chs ci- cib cic cid cif cih cii cio cir cis co- cob coc cod cof coh coi coo cor cos crb crc crd crf crh cri cro crr crs csb csc csd csf csh csi cso csr css dbb dbc dbd dbf dbh dbi dbo dbr dbs dcb dcc dcd dcf dci dco dcr dcs ddb ddc ddd ddf ddh ddi ddo ddr dds dfb dfc dfd dff dfh dfi dfo dfr dfs dh- dhb dhc dhd dhf dhh dhi dho dhr dhs di- dib dic did dif dih dii dio dir dis dob doc dod dof doh doi doo dor dos drb drc drd dri dro drr drs dsb dsc dsd dsf dsh dsi dso dsr dss fbb fbc fbd fbf fbh fbi fbo fbr fbs fcb fcc fcd fcf fci fco fcr fcs fdb fdc fdd fdf fdh fdi fdo fdr fds ffc ffd fff ffh ffi ffo ffr ffs fhb fhc fhf fhh fhi fho fhr fhs fib fic fid fif fih fii fir fis fob foc fof foh foi foo for fos frb frc frd frf frh fri fro frr frs fsb fsc fsd fsf fsh fsi fso fsr fss h-i hbb hbc hbd hbf hbh hbi hbo hbr hbs hcb hcc hcd hcf hch hci hco hcr hcs hdb hdc hdd hdf hdh hdi hdo hdr hds hfb hfc hfd hff hfh hfi hfo hfr hfs hhb hhc hhd hhf hhh hhi hho hhr hhs hib hic hid hif hih hii hio hir his hob hoc hod hof hoh hoi hoo hor hos hr- hrb hrc hrd hrf hrh hri hro hrr hrs hsb hsc hsd hsf hsh hsi hsr hss i-d i-f ibb ibc ibd ibf ibh ibi ibo ibr ibs icb icc icd icf ich ici ico icr ics idb idc idd idf idh idi ido idr ids ifb ifc ifd iff ifi ifo ifr ifs ihb ihc ihd ihf ihh ihi iho ihr ihs iib iic iid iif iih iii iio iir iis io- iob ioc iod iof ioh ioi ioo ior ios ir- irb irc ird irf iri iro irr irs is- isb isc isd isf ish isi iso isr iss o-i ob- obb obc obd obf obh obi obo obr obs oc- ocb occ ocd ocf och oci oco ocr ocs odb odc odd odf odh odi odo odr ods of- ofb ofc ofd off ofi ofo ofr ofs ohc ohd ohf ohh ohi oho ohr ohs oib oic oid oif oii oio oir ois oo- oob ooc ood oof ooh ooi ooo oor oos or- orb orc ord orf orh ori oro orr ors os- osb osc osd osf osh osi oso osr oss rbb rbc rbd rbf rbh rbi rbo rbr rbs rcb rcc rcd rcf rch rci rco rcr rcs rdb rdc rdd rdf rdh rdi rdo rdr rds rfb rfc rfd rff rfh rfi rfo rfr rfs rh- rhb rhc rhd rhf rhh rhi rho rhr rhs rib ric rid rif rih rii rio rir ris rob roc rod rof roh roi roo ror ros rrb rrc rrd rrf rrh rri rrr rrs rsb rsc rsd rsf rsh rsi rso rsr rss sbb sbc sbd sbf sbh sbi sbo sbr sbs scb scc scd scf sch sci sco scr scs sdb sdc sdd sdf sdh sdi sdo sdr sds sfb sfc sfd sff sfh sfi sfo sfr sfs sh- shb shc shd shf shh shi sho shr shs sib sic sid sif sih sii sio sir sis sob soc sod sof soh soi soo sor sos sr- srb src srd srf srh sri sro srr srs ss- ssb ssc ssd ssf ssh ssi sso ssr sss

bbbb bbbs bbch bbci bbdd bbdo bbfc bbhs bbrc bcbc bcbs bccc bcci bccs bcds bcfc bchd bchs bcis bcof bcor bcos bcrs bcsc bcss bd-r bdbc bddc bddh bdhs bdii bdos bdsd bfcs bffs bfhs bfsi bfsr bhcc bhff bhhs bhir bhoi bhor bhsf bibb bibi bibo bibs bicc bich bici bico bics bidi bido bidr bids biff bifi bihi bihs biis bio- bioc bioi bios birb bird biri biro birr birs bis- bisc bisd bish biso biss bobb bobi bobo bobs boch boco bocs bodb bodh bodi bodo bods bofd boff bofh bofs bohd boho bohr bohs boi- boid boii bois boob booc bood boof booh boor boos bor- bord borf borh bori boro borr bors bosc bosh bosi boso boss brcb brdo brds brfc brhs bric brid brih brio bris brob broc brod broh broo bror bros brrr brrs brsb brsr bsbd bsci bscs bsfc bsff bsfs bshs bsic bsod bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbdb cbdc cbdi cbdo cbds cbfb cbfc cbhs cbid cbir cbrd cbrh cbsc cbsi ccbc cccb cccc cccf ccci cccs ccdc ccdf ccdh ccdi ccdr ccds ccfc ccfd ccff ccfi cchr cchs ccic ccid ccii ccir ccis ccob ccoc ccod ccrc ccrf ccri ccrs ccsd ccsf ccsi ccss cd-r cdbf cdcs cddb cddr cdfs cdhs cdic cdii cdio cdis cdos cdrs cdss cfbc cfbr cfbs cfcb cfcf cfco cfcs cfds cffb cffr cfhs cfor cfos cfrb cfsi chch chci chcs chdi chfc chfi chfr chfs chhs chib chic chid chif chih chir chis choc chod choh choi