-ic -ol bbb bbc bbd bbf bbi bbl bbo bbr bbs bcb bcc bcd bcf bci bcl bco bcr bcs bdb bdc bdd bdf bdi bdl bdo bdr bds bfb bfc bfd bff bfi bfl bfo bfr bfs bi- bib bic bid bif bii bil bio bir bis blb blc bld blf bli bll blo blr bls bob boc bod bof boi bol boo bor bos brb brd brf bri brl bro brr brs bsb bsc bsd bsf bsi bsl bso bsr bss c-- cbb cbc cbd cbf cbi cbl cbo cbr cbs ccb ccc ccd ccf cci ccl cco ccr ccs cdb cdc cdd cdf cdi cdl cdo cdr cds cfb cfc cfd cff cfi cfl cfo cfr cfs ci- cib cic cid cif cii cil cio cir cis cl- clb clc cld clf cli cll clo clr cls co- cob coc cod cof coi col coo cor cos crb crc crd crf cri crl cro crr crs csb csc csd csf csi csl cso csr css dbb dbc dbd dbf dbi dbl dbo dbr dbs dcb dcc dcd dcf dci dcl dco dcr dcs ddb ddc ddd ddf ddi ddl ddo ddr dds dfb dfc dfd dff dfi dfl dfo dfr dfs di- dib dic did dif dii dil dio dir dis dl- dlb dlc dld dlf dli dll dlo dlr dls dob doc dod dof doi dol doo dor dos drb drc drd dri drl dro drr drs dsb dsc dsd dsf dsi dsl dso dsr dss fbb fbc fbd fbf fbi fbl fbo fbr fbs fcb fcc fcd fcf fci fcl fco fcr fcs fdb fdc fdd fdf fdi fdl fdo fdr fds ffc ffd fff ffi ffl ffo ffr ffs fib fic fid fif fii fil fir fis flb flc fld flf fli fll flo flr fls fob foc fof foi fol foo for fos frb frc frd frf fri frl fro frr frs fsb fsc fsd fsf fsi fsl fso fsr fss i-d i-f ibb ibc ibd ibf ibi ibl ibo ibr ibs icb icc icd icf ici icl ico icr ics idb idc idd idf idi idl ido idr ids ifb ifc ifd iff ifi ifl ifo ifr ifs iib iic iid iif iii iil iio iir iis il- ilb ilc ild ilf ili ill ilo ilr ils io- iob ioc iod iof ioi iol ioo ior ios ir- irb irc ird irf iri irl iro irr irs is- isb isc isd isf isi isl iso isr iss lbb lbc lbd lbf lbi lbl lbo lbr lbs lcb lcc lcd lcf lci lcl lco lcr lcs ldb ldc ldd ldf ldi ldl ldo ldr lds lfb lfc lfd lff lfi lfl lfo lfr lfs lib lic lid lif lii lil lio lir lis llb llc lld llf lli lll llo llr lls lob loc lod lof loi lol loo lor los lrb lrc lrd lrf lri lro lrr lrs lsb lsc lsd lsf lsi lsl lso lsr lss o-i ob- obb obc obd obf obi obl obo obr obs oc- ocb occ ocd ocf oci ocl oco ocr ocs odb odc odd odf odi odl odo odr ods of- ofb ofc ofd off ofi ofl ofo ofr ofs oib oic oid oif oii oil oio oir ois olb olc old olf oli oll olo ols oo- oob ooc ood oof ooi ool ooo oor oos or- orb orc ord orf ori orl oro orr ors os- osb osc osd osf osi osl oso osr oss rbb rbc rbd rbf rbi rbl rbo rbr rbs rcb rcc rcd rcf rci rcl rco rcr rcs rdb rdc rdd rdf rdi rdl rdo rdr rds rfb rfc rfd rff rfi rfl rfo rfr rfs rib ric rid rif rii ril rio rir ris rlc rld rlf rli rll rlo rlr rls rob roc rod rof roi rol roo ror ros rrb rrc rrd rrf rri rrl rrr rrs rsb rsc rsd rsf rsi rsl rso rsr rss sbb sbc sbd sbf sbi sbl sbo sbr sbs scb scc scd scf sci scl sco scr scs sdb sdc sdd sdf sdi sdl sdo sdr sds sfb sfc sfd sff sfi sfl sfo sfr sfs sib sic sid sif sii sil sio sir sis slb slc sld slf sli sll slo slr sls sob soc sod sof soi sol soo sor sos sr- srb src srd srf sri srl sro srr srs ss- ssb ssc ssd ssf ssi ssl sso ssr sss

bbbb bbbs bbci bbdd bbdo bbfc bblb bbls bbrc bcbc bcbs bccc bcci bccl bccs bcds bcfc bcis bcof bcor bcos bcrs bcsc bcsl bcss bd-r bdbc bddc bdii bdls bdos bdsd bfcs bffl bffs bfsi bfsr bibb bibi bibl bibo bibs bicc bici bico bics bidi bido bidr bids biff bifi biis bild bili bill bilo bils bio- bioc bioi biol bios birb bird biri birl biro birr birs bis- bisc bisd bisl biso biss bldc bldr blfc blic blio blir blis blls blob bloc blod bloo blrc blss bobb bobi bobo bobs boco bocs bodb bodi bodo bods bofd boff bofs boi- boid boii boil bois bold boli boll bolo bols boob booc bood boof bool boor boos bor- bord borf bori boro borr bors bosc bosi boso boss brcb brdo brds brfc bric brid bril brio bris brls brob broc brod brol broo bror bros brrr brrs brsb brsr bsbd bsci bscs bsdl bsfc bsff bsfs bsic bslc bsod bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcl cbcr cbcs cbdb cbdc cbdi cbdo cbds cbfb cbfc cbid cbir cblb cblc cbol cbrd cbrl cbsc cbsi ccbc cccb cccc cccf ccci cccl cccs ccdc ccdf ccdi ccdr ccds ccfc ccfd ccff ccfi ccfl ccic ccid ccii ccil ccir ccis cclc ccli ccls ccob ccoc ccod ccrc ccrf ccri ccrl ccrs ccsd ccsf ccsi ccsl ccss cd-r cdbf cdcs cddb cddl cddr cdfs cdic cdii cdio cdis cdli cdls cdos cdrs cdss cfbc cfbr cfbs cfcb cfcf cfcl cfco cfcs cfds cffb cffr